Hello! Our 1/4 in. x 6 in. 2-Cutter SDS-Plus Carbide Bit are intended for use with corded and cordless rotary hammers.
Hi Kay! Our 1/2 in. x 6 in. 2-Cutter SDS Carbide Bit (48-20-8271) is intended for concrete applications. We suggest checking out our Glass and Tile Drill Bits (48-20-8985) for use in glass.
Hi Kenny! Our 1/2 in. x 6 in. 2-Cutter SDS Carbide Bit (48-20-8271) is intended for concrete drilling applications.
Hi there! Our 3/4 in. x 12 in. 2-Cutter SDS Carbide Bit (48-20-8265) are for use in cordless rotary hammers.
As far as I can tell the "Plus" have a slight difference in their groove design. The Plus are backwards compatible to the SDS.
Hi Stu! This bit is intended to be used in an SDS-Plus Drill.
I believe the 1/4 inch shoulder is so you can put it in a an impact driver.