Feature: 1. Hole locator of glass brick. 2. Suitable for 4-12mm drill bits. 3. The iron ring is embedded inside to prevent the drill bit from excessively rubbing the plastic hole and prolong its service life. 4. The rubber suction cup is firmer and will not slip. Specification: 1. Color: orange + black 2. Material: PVC 3. Quantity: 1
