5-pc Countersink Drill Bit Set, 3in1 Woodworking Counterbore Hole Drill Bits for #6 8 10 12 16 Screws, Depth Adjustable M2 Pilot Drill Bits, 82-Degree Chamfer, 1/4” Hex Shank, 2 Allen Wrench 5 Piece Countersink Bit Set (#6 #8 #10 #12 #16)

A 5-piece, 3-in-1 countersink/counterbore set for common screw sizes (#6–#16), featuring M2 HSS pilot bits, an 82° chamfer, and a depth-adjustable counter sleeve with 1/4″ hex shanks for quick changes.

1/4 Inch Drill Bit (3 Pack) Industrial Grade M35 Cobalt Titanium Aluminum Nitrite – 1/4″ Diameter & Total Length of 4″ with Working Length of 2-3/4″ Easily Drill Into Metal, Steel, & Aluminum 1/4 in 3

Yellow Paw’s 1/4″ (6.35 mm) 3-pack drill bits are made from M35 cobalt steel with a Titanium Aluminum Nitride (TiAlN) finish and a 135° split point to help reduce walking when drilling into tougher metals. Each bit is 4″ long with a 2-3/4″ flute length, and the set includes a plastic storage case.