1-1/4-11 Extension for 3" Core Bits MPN:48-17-4030

The 1-1/4-inch x 11-inch length alloy steel extension comes with a thread size of 1-1/4-inch on one end, and the other part features an SDS-max shank to adapt various power drills accepting bit sizes from 1-2 inches allowing flexibility when tackling diverse projects which necessitate deep drilling operations into concrete walls, foundations or rocky substrates; thus enabling contractors handling large-scale construction sites as well as DIY enthusiasts with less accessibility or muscle strength to employ the drill press/hammer action drills and secure firmly onto various masonry surface materials such as brick or block.