Overview Reviews Product Description Irwin Tools Catalog Product Videos Custom Field Manufacturing country DE Product Reviews Write a Review Write a Review × Irwin 1-1/2 x 18 x 23" 4-Cutter SDS-MAX® Hammer Drill Bit 323031 Rating * Select Rating 1 star (worst) 2 stars 3 stars (average) 4 stars 5 stars (best) Name Review Subject * Comments *