Alloy Tattoo GripFeatures: 1. Made of high quality aluminum alloy material, which is safe, non toxic, eco friendly, and durable for long term use. 2. Handle internal is used of "card point spin" high precision adjustable design so that the handle can adjust the handle length according to the different needle lengths. 3. The end of the handle has a lock type structure so that you can directly lock the needle on the head. 4. This adjustable handle is both suitable for