This upgraded version: a belt protection cover is added, a pressure scale is added to the side, the limit rod is replaced with a limit ring, and a few more expansion holes are added to the bottom plate. The overall function is better. This mini drill machin has solid Aluminum + Iron structure, 795 DC motor strong and 7000RPM speed strong and precision drilling capacity. It is equipped B10 drill chuck compatible for 0.8-6mm HSS drill bits for wood, plastic plate, resin plate, aluminum and another soft material drilling. It has 3 metal , 2 liner bearings, dual spring and Limiting ring easy to operation perfect, enable you to control the drilling depth easily. Alignment hole on the base enable you to locate the drilling center on the base easily (after adjust the pressing height, just loosen the Limiting ring, make sure it drop down to the hole which means the bit is at the base center). Add-on expansion design with two type slots on the base enable you to install the mini bench vise or CNC sliding table for your CNC drilling projects. Material: Aluminum+Iron colour: Silver Package Contents: 1 x Mini Machine 1 set x accessories 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.