Package List: 5 x Drill Bits 2 x Allen wrench ★ Outstanding strength - The drill bit is convenient and compatible with most drill bits, such as bench drills, lithium battery drills, etc. Meichoon Forstner Drill Bit 5 Pieces 15mm 20mm 25mm 30mm 35mm Carbon Steel Adjustable Positioning Woodworking Hinge Hole Drilling Boring Bit for Soft and Hard Wood : : Home ImprovementHow to use: termine the position of the hinge, the short board isfacing up, and the screws are fastened on the edge of theboard 2.Use the 15- 35MM positioning drill toopen the hole and install the... Specification: Material: Tungsten carbide Hole Depth Adjustment: 10-50mm (0.39-1.97inch) Total length of the drill bit: 78 mm (3.07inch) Shaft length: 27mm (1.06inch) Shaft diameter: 7- 8mm (0.27-0.31inch) Opening diameter: 15 mm, 20 mm, 25 mm, 30 mm, 35 mm (0.59 0.78 0.98 1.18 1.38) Package Weight: 484g (1.07lb) ★ Adjustable Design - Featuring a versatile adjustable hinge, our carbide tipped hole opener allows you to effortlessly expand the hole size from 15mm to 35mm, catering to various woodworking needs. 5 Pcs Forstner Drill Bit Set,Carbon Steel Multi-Tooth Flat s For Woodworking 5PC FORSTNER DRILL BIT SET 15MM 20MM 25MM 30MM 35MM WOOD FLAT BOTTOM Blind Holes Forstner Bit ★ Wide range of applications - The drill bit can easily make holes in various types of material boards, such as softwood and hardwood, multi-layer plywood, composite board, plastic. Traction Mats for Off-Road Mud, Sand, & Snow Vehicle Extraction and Recovery, Bendable, Unbreakable, Orange, 2 Pack ... Cars, Trucks, and SUVs ★ Premium Quality - The positioning woodworking hole opener set is made of high-grade hard alloy, with high strength, wear resistance and durability.