The most precise & accurate commutator lathe available on the market. Standard solid carbide v-blocks armature support with oil reservoir. The Cutting bit movement from left to right is fully automatic and the feed speed is user adjustable. Both travel end point stops are adjustable. The unit is very easy to use and operates from 12vdc source and the drive motor is included. Also included is an ultra durable carbide cutting bit that cuts like diamond. Fits all 540 & 550 size stock and modified armatures. Comes with a nice metal carrying case.