Feature: Turn on the grinder, keep it rotating into the locator, the grinder can punch accurately. Great for many electric grinder rotary drill machine. This drill locator is made of solid plastic with high quality, sturdy and durable in use. You can rotate the card directly to the electric grinding in the holder for fixation. It has different depth readings (3/4, 1/2, and 1/4 inch) where you can adjust by sliding the shaft up and down, change depth of cutter by turning the shaft and locks it tight with the screw attached on the side. Spec:Material: PlasticColor: BlackBase Diameter: Approx. 6cm / 2.4inchHeight: Approx. 4.3cm / 1.7inchWeight: Approx. 37g / 1.3ozPackage Included:1 x Drill LocatorNotice: 1. Please allow small size error due to manual measurement. Thanks for your understanding. 2. Only a drill locator, no other stuff included.