Amazon has BOSCH HC2163 1-by-8-by-10-Inch SDS Bit for $35.15 + free shipping.
Technical Details
* Patent-pending 4-flute design - pulls dust out quickly for faster drilling.
* Provides fast dust removal
* Tip design maximizes carbide surface contact for longer life
Product Description
From the Manufacturer
Bosch carbide-tipped drill bit heads are harder, tougher and more resistant to extreme loads.
Product Description
Sold as each. "SDS-plus" shank. Carbide tipped drill bit head. 4 flute design provides fast dust removal. Vinyl pouch. . 1", 10" Long, 8" Usable. Manufacturer's number: HC2163. Buy Hardware Supplies SKU #: 2114122. Country of origin: Germany. Distributed by Skil-Bosch Power Tool Co.
BOSCH HC2163 1-by-8-by-10-Inch SDS Bit $35.15 FS 
