I can't stress the importance of buying these accessories enough for your rocket espresso machine. I have owned the Mozzafiato Chronometro now for nine days; seven of those days were spent in complete agony trying to produce silky micro foam with the stock steam tip. I'm not a professional barista, but I did work in the industry for seven years and I know what I'm doing. The stock steam tip that comes with most rocket machines is not designed to work well with small pitchers and small quantities of milk, there is no video or technique which will allow you to achieve the foam results you wish with the stock steam tip in a 12 to 15 ounce carafe. This package of steam tips comes with a two hole attachment option that adequately reduces the steam pressure enough to allow for quality foam making. If you are looking at this product because you are having problems, steaming milk with your new rocket espresso machine, my suggestion is to just immediately purchase and expedite delivery.

The original steam tip on my Rocket Cellini is larger with two holes slightly larger and set closer to the center of the tip. It did a reasonable job of getting the milk silky but leaves no room for error? One misstep and the micro bubbles disappear.The replacement two-hole tip has smaller holes set further from center and that works well albeit at a slower rate due to less steam from the smaller holes. My cappuccinos are great, boiler holds pressure and overall I am happy I made the change to the replacement tip.

It’s fit perfectly in my appartmento, and it makes difference in milk frothing

Echoing everyone else who says these are a HUGE upgrade over the Rocket Appartamento stock steam tip! Don't be like me and wait 5 years to make such a small investment with huge immediate payoff- you're already spending thousands on a machine and grinder, just do yourself a favor and upgrade to these immediately. The two hole tip in this set is excellent for smaller quantities of milk and makes much better micro-foam than the 2 hole stock steam tip, and I look forward to experimenting with the others. I see other reviews mention they don't come with o rings, however my set came with o rings installed- not sure if that's a new development.

Once I figured out which works best I put the others in the back of the drawer and forgot about them. It felt like kind of a waste.

Love them. They are in my opinion better than the two hole tip the Apartamento came with!

An absolute necessity! The stock tip just doesn't cut it.

I replaced the OEM steam tip with the ?two hole? that came in the set and like it better than the two hole tip that came on the machine. The holes are a little smaller (not much), but I think their location is better than the OEM two hole. Have not tried any of the others at this time.

The video review is spot on and very helpful. Both the two hole and three hole Rocket accessory tips allow for more controlled generation of microfoam and getting that thick paint consistency compared to the stock steaming tip. They do come with attached O-rings but would order additional ones.

I've had my Rocket Appartamento for about a month now and couldn't get consistency with my milk steaming. The two hole tip in this kit immediately solved that. It reduces the steam power coming out and makes things much easier - much more consistent. I may mess around with the other tips later, but from what I've read they are better suited for larger quantities of milk. Since I mainly make cortados and cappuccinos the two hole tip works perfectly.

Great product, these allow me to choose the best tip sir ME when making my foam for my Latte

The two holes steam tips has better control when steaming, four holes might be too powerful. Overall is it good.

I have been really happy with these tips. Been playing with them, and I really like the amount of steam generated in the four hole tip. I know you can get good microfoam with a two hole tip, but I think the additional tips help replicate the amount of steam generated from a commercial machine.

These steam tips are great. I like the two-hole tip for steaming smaller quantities of milk (4-8 oz.) because it warms the milk more slowly and textures it nicely. It's good to have the choices, each one makes a difference. As exoected with Rocket, these are well made.

My shots were coming out great, but my milk was no good. I had tried many suggestions, but the one that changed the milk consistency from loose to paint was the two hole from this group!

None of the tips came with o-rings for some odd reason. Had I known I would have ordered one for each. SCG video suggested using o - ring off original tip but I couldn't easily remove it and didn't want to damage it. So I put the 2 hole tip on without an o - ring to try it out. I prefer it over original. Guess I'll track down some o-rings

I bought this set of four tips to go with the Cellini Evolutione V2 I ordered. For me the standard two hole tip works the best. The standard tip is also better finished than those of the set.

Like others here, I've defaulted to the new 2-hole. That in itself is a huge improvement, and has done wonders for my foamcraft. But I will go back and try the other tips again later, once I've really mastered this one. I'd love to know if there's specific thinking behind the other configurations: maybe for different kinds of boilers (which wouldn't help me), or maybe for different sizes of jug and milk batches (which might be useful). I ought to get the O-rings. So I would recommend: a) watching the crew video test them (not least because it's funny); and b) including a set of O rings with your order.

The 2 hole tip in this set has smaller holes and makes frothing milk a much easier task! I never was great at it but this makes it a breeze. Order the extra "O" rings for swapping tips easily.

I was having some difficulty in getting the froth I wanted after upgrading from a Rancilio Silvia to a Rocket R-58. I thought that weird until a bit of cruising the web to discover I was not alone! The smaller holes in the 4 pack 2 hole tip did the trick. I have not tried the other tips yet but just by changing the OEM 2 hole to the Accessory 2 hole tip worked. They are a bit smaller overall and it makes cleaning easier.

After discovering a link for this set of 4 Rocket steam tips on the Quick Mill Vetrano page, I decided to give them a try. I have not had good results steaming small quantities (5-6 oz.) of milk using the 4-hole tip that the Vetrano came with, most likely due to my own lack of skill. The only one of the four tips that really interested me, and the only one I've used, is the 2-hole tip. This slows down the process, and also makes it easy to have the holes at the same level in the milk. This has worked well for me, and I am now able to get good microfoam, which I had had much greater success with on my Silvia with its 1-hole tip. As my skill improves, I plan on giving the original Vetrano tip another try at some point, but for now, I'm happily using the Rocket 2-hole tip for my morning Latte. My tips arrived without any O-rings, but that was easily solved with a trip to a local home supply store (I understand from the S.C.G. Crew that this was an oversight -- they should have come with an O-ring). I bought several bags of O-rings, and the #5 one works fine on the outside of the tip's threads. I'm also using a small #60 O-ring on the inside, around the interior steam tube, in an effort to prevent steam from going back up the inside of the no-burn steam wand. The original Vetrano tip has a small red interior seal for this purpose. I'm happy with my purchase and recommend this for other Vetrano owners who may, like me, be working their way up the frothing learning curve.Pros:Cons: