2" forstner bit. Precision shear bits bore smooth, flat-bottomed holes. Serrated design produces a unique cutting edge for less splintering and chipping. Hardened steel for longer life. Ultra sharp spur insures accurate hole and resists walking on material. 3-1/2" length. 3/8" shank. Bit Diameter: 2", Shank Size: 3/8", Overall Length: 3-1/2" No. PB-016: Bit Diameter: 2-1/8", Shank Size: 3/8", Overall Length: 3-1/2"