Overview Reviews Product Description Unleash the power and pinpoint precision you need for your trade with the SDS-MAX® 3/4" x 17" x 21" standard drill bit.The unique flute and tip quickly clear debris and drill symmetrical holes.With its shot-peened, double-tempered finish copper braze material, this bit is built to last.Crafted for SDS-MAX® and te-f, g, and y style drills. Irwin Tools Catalog Product Videos Custom Field Manufacturing country DE Product Reviews Write a Review Write a Review × Irwin 3/4 X 17 X 21" 4-Cutter SDS-MAX® Hammer Drill Bit 323010 Rating * Select Rating 1 star (worst) 2 stars 3 stars (average) 4 stars 5 stars (best) Name Review Subject * Comments *