Dia. Of cut: 1/8"to 27/64". 1/4" shank. 100 degree cutter. High Speed Steel. The "zero flute" design is a single hole drilled through the head of the cutter, which makes it virtually chatter-free.

5/16" Diameter. Overall length 1.19". Solid carbide tip for long life. 1/4X28 thread. Fits standard microstops

.375 Dia., 1/4" Shank. 3 flute countersink. High speed steel. Three flute design. Made of High Speed Steel

#12 Diameter, 1/4-28 thread. Two fluted 100 degree cutter with a 1/2" body diameter. These cutters excel in cutting highly abrasive material such as Kevlar, and other "difficult to machine" materials.

#19 Pilot, 1/2" Diameter. 1/4x28 Thread. 3 flute, 100 degrees. Integral (fixed) pilot for cutting accuracy. High Speed Steel.

3/8" Diameter 100 degree, 3 flute, countersink cutter with integral #30 Pilot. Fits all 1/4x28 Threaded adapters. Made of hardened high speed steel (HSS).

3/8" Diameter 100 degree, 3 flute, countersink cutter with integral #40 Pilot. Fits all 1/4x28 Threaded adapters. Made of hardened high speed steel (HSS).

#40 Diameter, 1/4-28 thread. The unique "high-hook" design of these countersink cutters allows smooth, easy cuts with virtually no chatter. Body diameter is 1/2. They will fit into a stop countersink or they can be used directly with an angle drill. Suita

Aircraft Counterbore, 1-1/4" Dia., 3/16" Pilot Hole, 2-3/4" Len. Made of High Speed Steel. Requires 1400P series pilot.

3/8" Diameter 100 degree, 3 flute, countersink cutter with integral #21 Pilot. Fits all 1/4x28 Threaded adapters. Made of hardened high speed steel (HSS).

Aircraft Counterbore, 7/16" Dia., 1/8" Pilot Hole, 2-3/4" Len. Made of High Speed Steel. Requires 1400P series pilot.

#30 Diameter, 1/4-28 thread. The unique "high-hook" design of these countersink cutters allows smooth, easy cuts with virtually no chatter. Body diameter is 1/2. They will fit into a stop countersink or they can be used directly with an angle drill. Suita