3 Piece 120 Degree Countersink Bit Set with Drill Guide, Size: #21, #30, #40, Countersink Pilot Cutters with, Self Centering Countersinks Made from High Speed Steel

3 pc set of 120° countersink bits, 1/2" diameter. #21, #30, #40. Bits are 3 flute, Integral (fixed) pilot for cutting accuracy. Made from high speed steel. Have a 1/4x28 threaded shank. Note: Cannot be used for steel – only aluminum and soft metals. Note: check the angle of your fastener before ordering. Screw head countersink angles can very. The most common sizes are 82, 90, 100, 120 degrees. The angle can usually be found on the package or in the items description.

• 3 Pc set of 120 degree countersink cutters. Threaded shank fits a microstop countersink tool. Microstop tool NOT INCLUDED
• The self centering design of the countersink bits helps create accurate and precise holes.
• With the microstop countersink feature, it allows you to set and adjust each depth for consistent results time after time. Microstop tool NOT INCLUDED
• The countersink set is made of high speed steel and should be used on soft metals and aluminum.
• These 120 degree countersink bit set allows you to create perfect fillet radiuses every time using its pilot tip drill guide.