This drill guide is used to create access hole in aluminum profile, provides secure and precision guide for drilling, easy to use Help you use aluminum profiles to build furniture, 3D printers, laboratory equipment, and even industrial equipment. Applicable to 20/30/40 series European standard aluminum profiles Made of aluminum alloy, precision machining, anodized finish, laser etched mark, sturdy and Scope of application:20/30/40 aluminum profile Tap lead sleeve: medium 6.2mm stainless steel sleeve It's DIY kits, needs to finish by yourself. Color: Black Material: Aluminum Alloy Package Contents: 1 * Auxiliary device 1 * Slider 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.