Feature:1. The bit is forged by bearing steel, with high hardness and long service life after overall heat treatment.2. U long chip drain grooves designs, facilitate wood chip discharge, improve the efficiency of drilling.3. Drill sleeve designs, the force of the drill sleeve edge is in a plane, effective protection to avoid the situation of cracking at the beginning of use.4. Universal handle shape, circular designs at the end of the drill, so as to making clamping more stable.5. Suitable for density board, medium fiber board, particleboard, wood and other wood products, suitable for hole drilling machine, tenon machineSpecification:Condition: 100% Brand NewItem Type: Hole Drill BitsMaterial: Bearing steelModel: 14 mm / 12.7 mm / 15 mm / 16 mmApplication: Suitable for density board, medium fiber board, particleboard, wood and other wood products, suitable for hole drilling machine, tenon machine Package List:1 x Hole Drill Bits 12.7mm1 x Hole Drill Bits 14mm1 x Hole Drill Bits 15mm1 x Hole Drill Bits 16mm