[Includes 23pcs Woodworking Chamfer Drilling Kits]: 6pcs 1/4 inch Hex Shank HSS 5 Flute 90 Degree Countersink Bits + 7pcs Tri-Point HSS Countersink Bits with 1pc L-Wrench + 8pcs 3/ 8 inch Handle Cork Knife Set 1 Piece Automatic Center Punch      [7 Pieces 3 Countersink Bits]: Made of high carbon steel with high hardness and wear resistance, including 3mm, 4mm, 5mm, 6mm, 7mm, 8mm, 10mm for drilling pilot holes, large chip flutes and five flutes The chamfer allows for faster and easier sawdust removal. Using the included L-shaped hex key, you can easily remove the five bevel chamfers or adjust the depth of the counter socket and drilled holes.      [8 Pieces of 3/8 inch Cork Shank Bits]: Made of high carbon steel for tapered 1/4 inch , 3/8 inch , 1/2 inch , 5/8 inch cork stoppers to cover embedded Screw holes or defects, the plugs can be cut to 22mm/23mm/25mm/26mm lengths.      [6 1/4 inch Hex Shank 5 Flutes Countersunk Bits]Made of high speed steel. Diameter has 6 different sizes: 6mm(1/4 inch ), 8mm(5/16 inch ), 9mm(3/8 inch ) , 12mm (1/2 inch ), 16mm (5/8 inch ), 19mm (3/4 inch ). Ideal for sinking 90 degree holes into wood and soft metal countersunk screws and fasteners. Great for DIY, home and general architectural/engineering use.            Material: steel      colour: As shown            Package Contents:      6 x 1/4 inch Hex Shank HSS 5 Flute 90 Degree Countersink Bits      7 x Tri-Point HSS Countersink Bits with 1pc L-Wrench      8 x 3/ 8 inch Handle Cork Knife Set       1 x Automatic Center Punch            Only the above package content, other products are not included.      Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.