Precision-machined cutting edges. Use with TCT Masonry Circular Cutter 633780. Use only with SDS Plus drill with ‘Roto Stop’ feature. Suitable guide hole must be pre-drilled. Precision-machined cutting edges. Use with TCT Masonry Circular Cutter 633780. Use only with SDS Plus drill with ‘Roto Stop’ feature. Suitable guide hole must be pre-drilled.