$60.99 SKIL 1/4-in x 4-in Round Rotary Drill Bit in the Masonry Drill Bits department at Lowes.com
4 in Diameter Long Concrete Masonry LARGE Hammer Drill Core Bit SDS Max Shank | eBay
DRILTEC 1/4 X 10 1/4 SDS-Plus Rebar Cutter Masonry Drill Bit, ADX007048 | eBay
