Milwaukee 1-5/8 in. x 23 in. 4-Cutter SDS-MAX Carbide Drill
Milwaukee 1-5/8 in. x 23 in. 4-Cutter SDS-MAX Carbide Drill,Bosch Bulldog tough 4-cutter 1/4-in x 6-in Alloy Steel,Amazon.com: BOSCH HC8536 3-1/4-Inch x 22-Inch SDS Max Core,13/16,Sds Max 06-H 1-3/8″ x 16-1/2″ Carbide 4 Cutter Drill | eBay