Sonnumberfour Bubble Caps
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Save an extra 10% off when you buy 2 gem inserts
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In stock
Designed with the perfect restriction to prevent spillover when paired with Adapt Tech Gem Inserts without compromising the function of your rig. An excellent accompaniment to any set up.
Please allow 7-10 days for shipment as each is made to order
10 days for custom faceted caps
Customer Reviews
This is by far the best cap when using an insert. I now have three of them and each one is made with love, high quality and design..
Yes it’s calibrated for perfect functionality with inserts!!💨💨💨💨💨🤙
Flawless design/ function.
Seals very well and the short nozzle pairs nicely with the Adapt Tech
I've had this bubble cap in clear ever since my first gem (18mm at the time) and I haven't been able to find a comparable bubble cap ever since. It's that good. Minimal splashing every time with the perfect amount of restriction. Beautiful to look at too, I love the handle.
SonNumberFour Glass
Form and function - original designs available straight from the craftsman shipped from the mountains of Montana.
Est. 2017
Our Sapphire products are made from the highest quality materials sourced from professionals with over 20 years experience in sapphire technologies.
Quartz Restoration Service
An industry exclusive to our studio we offer restorations of quartz nails - you'll never need a new banger again
Precision, Perfection
Expertly crafted faceted inserts offer a unique take on our highly functional gems - many cuts we offer are 1 of 1
Customer Reviews
This is by far the best cap when using an insert. I now have three of them and each one is made with love, high quality and design..
Yes it’s calibrated for perfect functionality with inserts!!💨💨💨💨💨🤙
Flawless design/ function.
Seals very well and the short nozzle pairs nicely with the Adapt Tech
I've had this bubble cap in clear ever since my first gem (18mm at the time) and I haven't been able to find a comparable bubble cap ever since. It's that good. Minimal splashing every time with the perfect amount of restriction. Beautiful to look at too, I love the handle.