Irwin Marples 1 3/8 in. Dia. x 6 in. L Carbon Steel Forstner Drill Bit 3/8 in. Round Shank 1 pc.

Bores perfectly smooth, flat bottomed holes. More accurate holes at any angle. Use for boring overlapping holes or pocket holes. Reduced shank fits 3/8 inch and larger drills and drill presses.
1-3/8 in. Forstner
Designed for clean holes
Teeth designed for clean holes
Cutting angles maximize speed of cut