11Pcs Woodworking Cavity Drill Bit Set Remote Control Hole Opener Set with Key Chamfering Drilling Pneumatic Punch SetFeature:1. Convenient disassembly and installation, improve efficiency.2. When punching holes, the chamfering effect is also taken into account.3. Excellent material, strong and durable.4. Purpose: It is used to process wood to open and merge holes. Specification:Material: Drill Bit: High Speed Steel, Chamfering: High Carbon SteelType: 5# (2mm) 6# (2.5mm) 8# (2.75mm) 10# (3.25mm) 12# (3.5mm)Chamfer Angle: 90 Degree Package Size: 150*70*30mm/5.9x2.8x1.2inNote:Due to the different monitor and light effect, the actual color of the item may be slightly different from the color showed on the pictures. Please allow 1-2cm measurement deviation due to manual measurement.5 x Reaming Drill Bit5 x Reaming Bit Bit1 x Wrench