Thunderbit® Drill Bits

3-7/8" x A ThunderbitDrill Bit

SKU: DBSA

4" x 1/4" ThunderbitDrill Bit

SKU: DBS14

4" x B ThunderbitDrill Bit

SKU: DBSB

4" x C ThunderbitDrill Bit

SKU: DBSC

4" x D ThunderbitDrill Bit

SKU: DBSD

4" x E ThunderbitDrill Bit

SKU: DBSE

4" x M6 ThunderbitDrill Bit

SKU: DBS6M

4-1/2" x 5/16" ThunderbitDrill Bit

SKU: DBS516

4-1/2" x M8 ThunderbitDrill Bit

SKU: DBS8M

4-1/2" x O ThunderbitDrill Bit

SKU: DBSO

4-1/4" x 9/32" ThunderbitDrill Bit

SKU: DBS932

4-1/4" x K ThunderbitDrill Bit

SKU: DBSK