(CMT550-HS-HW-DB) TECHNICAL FEATURES :- Chrome coated.- Hexagonal shank. d D L S Code 8 10 10 Center drill for bore enlargement and plug removal CMT550-DB1 20 30 180 8 Center drill for wood CMT550-HS1 20 30 180 8 Center drill for masonry CMT550-HW1 32 270 180 10 Center drill for wood CMT550-HS2 32 270 180 10 Center drill for masonry CMT550-HW2 32 270 320 10 XL Center drill for wood XL CMT550-HS2XL Related products Multi-purpose hole saws