3/8" Reduced Shank Thunderbit Drill Bits

TriNadoÂ® drills are the perfect no-slip drill bit for your cordless drilling needs. The special 3-flat reduced shank provides a positive grip in cordless, keyless and conventional power tools.

4-1/2" x 7/16" 3/8" Reduced Shank Thunderbit Drill Bit

SKU: DBR38716

Log in for pricing
4-3/4" x 15/32" 3/8" Reduced Shank Thunderbit Drill Bit

SKU: DBR381532

Log in for pricing
4-5/8" x 29/64" 3/8" Reduced Shank Thunderbit Drill Bit

SKU: DBR382964

Log in for pricing
4-7/16" x 27/64" 3/8" Reduced Shank Thunderbit Drill Bit

SKU: DBR382764

Log in for pricing
4-7/8" x 31/64" 3/8" Reduced Shank Thunderbit Drill Bit

SKU: DBR383164

Log in for pricing
5" x 1/2" 3/8" Reduced Shank Thunderbit Drill Bit

SKU: DBR3812

Log in for pricing