Feature1The bit is forged by bearing steel, with high hardness and long service life after overall heat treatment.2U shape long chip drain grooves design, facilitate wood chip discharge, improve the efficiency of drilling.3Drill 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.4Universal handle shape, circular designs at the end of the drill, so as to making clamping more stable.5Suitable for density board, medium fiber board, particleboard, wood and other wood products, suitable for square hole drilling machine, square tenon machine.Condition: 100% Brand NewItem Type: Square Hole Drill BitModel: 22 mmMaterial: Bearing SteelColor: As Pictures Shown Weight: Approx. 421.0g Application: Suitable for density board, medium fiber board, particleboard, wood and other wood products, suitable for Square hole drilling machine, Square tenon machine Package List1 x Square Hole Drill BitNote1. Please allow 13cm error due to manual measurement. Thanks for your understanding.2. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard.