Features: Made of aluminum alloy, anodized surface, which is durable and not easy to rust. The manual punch is used to punch holes in the edge of wood and wood to make the board joint. 6mm, 8mm, 10mm/0.24 inch, 0.31 inch, 0.39 inch Cr12 metal sleeve drill bit is wear-resistant. Two claws are convenient for quick positioning of the hole center. The maximum hole thickness is 46mm / 1.81 inch. The centerlines provide accurate alignment when drilling on a variety of surfaces. Carpenter drilling accessories, high drilling accuracy, is a good helper for woodworking. Hole locator kit only, other accessories demo in the picture are not included. Specifications: Material: Metal Size: Application. 58x37mm / 2.28x1.46inch Color: As the picture shown Quantity: 4pcs/set, 11pcs/set, 71pcs/set Note: Please allow 0-1mm error due to manual measurement, pls make sure you do not mind before bidding. Due to the difference between monitors, the picture may not reflect the actual color of the item. Thank you! Package Included: 1 x Hole Locator 3 x Drill Sleeve (6/8/10mm/0.0.24/0.31/0.39inch) Or 1 x Hole Locator 3 x Drill Sleeve (6/8/10mm/0.24/0.31/0.39inch) 7 x Drill Bit (6/8/10mm/0.24/0.31/0.39inch) Or 1 x Hole Locator 3 x Drill Sleeve (6/8/10mm/0.24/0.31/0.39inch) 7 x Drill Bit (6/8/10mm/0.24/0.31/0.39inch) 20x6mm/0.24inch Wooden Dowel Pin 20x8mm/0.31inch Wooden Dowel Pin 20x10mm/0.39inch Wooden Dowel Pin