HexaGrip Memory Foam Grips will increase your tubes grips size to 1.5 inch in diameter. Their hexagonal shape and soft angles were designed to fit the natural angles of your thumb and fingers while tattooing. True Tubes & True Grips have been developed, researched, tested and designed by tattoo artists for today's professional tattoo artists! True Grips are the world's first ever Eco-Friendly, All Disposable, Memory Foam Grip Covers developed by Tattoo Artists for today's busy tattoo artist. Available here at Por Vida Tattoo Supply.