FightEver DIY Coil Builder Maker Tool - Micro Coils Jig with 5 Resistance Optional 1.Stainless steel multifuntional tool for coil winding 2.Available size are 1.5, 2, 2.5, 3, 3.5 mm, can make coils at a certain size and adjust coil position. 3.Solid and durable, very high quality without any casting lines or burrs, the numbers are very clearly engraved. 4.Compact size that fits perfectly in any coil builders tool box and convenient to carry and keep 5.13 mm in length and Easy to wrap the resistive wire by hands