these work with the kwadron proton pen. has saved me from trying to order grips from them as i couldnt find anywhere to buy extras for my machine. the catridges dont always lock in the best but i havent had one fall out or anything.
Disposable tattoo pen grips Sold by box of 20 PCS Compatible with ELITE PEN machines
Made with Soft Silicone Individually blister packed and 100% E.O. Gas sterilized