The ordinary red ABS center disc is affordable, and the upgraded silver stainless steel center disc is more durable Good for wires from 24 AWG (3/64inch) and up, either solid or stranded. Great wire stripper for on-the-go users looking to strip small sections of scrap wire.This machine may not be able to strip wires thicker than 10 AWG, especially with tougher insulation. Product Size: 3-1/2inch x 1-3/4inch x 2inch Colour:silver + red Material:Metal + Plastic Package Contents: 2 x Handheld Copper Wire Stripping Machine Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.