Door Bits › Door Bits - Carbide Insert Drill Bit Image 1 of 1 Door Bits - Carbide Insert Drill Bit Sale Price: $29.27 Original Price: $33.52 sold out This Southeast Tool Carbide Insert Drill Bit comes:Cutting Diameter: 2-1/8”Shank: 1/2”OAL: 5-3/4” Sold Out Added! This Southeast Tool Carbide Insert Drill Bit comes:Cutting Diameter: 2-1/8”Shank: 1/2”OAL: 5-3/4”