Carbon Steel Auger Bit Woodworking Plug Thread Shank Set (8 Pieces) Type: Woodworking plug knife style: simple Material: carbon steel Tip Size: 6/10/13/16mm Four-tooth cutter head size: 13/16/19/22 mm Color: Display as picture Included: 1 set of drill bits (box not included) Features: This set includes 4 standard plug cutters and 4 four-tooth chamfer cutters. The chamfering tool causes the tapered plug to fill the countersink. Use standard knives to remove imperfections in wood. The 8-piece plug cutter set provides the perfect plug for countersunk holes. The knife set achieves an excellent finish when using the same wood. Shank features: round shank; suitable for bench drill round shank. Note: 1. There is a 2-3% difference in manual measurement. (1 inch = 2.54 cm) 2. Slight color difference should be acceptable due to light and screen.