Machine Type: Heavy Shader Coil Wrap Size: 8-Wrap Frame Material: Steel Machine Weight: 8.5 oz Extra Feature: Needle Bar Stabilizer These Machines are really well built for a great price. Comes with it's own Trox Screw Driver, for the ant-strip trox screws. The vice is really well designed to minimize stripping and breakage. Machine can run on a low voltage of 4.5 volts. Each machine has it's own unique armature bar shape designed for the specific job.