Overview Reviews Product Description Adaptor-1/2" BSP(M)-1/4"UNC(M). For use with Masonry Drill. Product Videos Custom Field Product Reviews Write a Review Write a Review × OX Adaptor-1/2" BSP(M)-1 1/4"UNC(M) Rating * Select Rating 1 star (worst) 2 stars 3 stars (average) 4 stars 5 stars (best) Name Email * Review Subject * Comments *