BUILT IN PROTRACTOR: Drills accurate right-angled or variable-angled holes with the built-in protractor scale ADJUSTABLE: Adjusts from 0 to 45 degrees in 5-degree increments in either direction of vertical drill position POSITIVE STOP: Built-in depth stop for accurate drill depth WORKS WITH DOWELS: V-groove for positioning round stock, pipe or tubing. A slide lock facilitates sanding and buffing STABLE: Anchoring pins to hold the guide securely in place on flat surfaces, narrow edges or large tubing