The Stubbie drip tip is a 5/10 drip tip made In the USA. It comes in grooved or smooth finishes. The amazing thing about the Stubbie is its universal design. It will fit anything from a carto tank to the smallest mini RDA; it literally has the tightest and widest tolerance of any tip on the market. It fits so perfect that you can pick up any device by the tip, shake it and it doesn’t move.