TREND SNAP/PC/12 Snappy Standard Plug Cutters 12.7mm - Made from Tool Steel they allow for longer plugs to be drilled. - Plugs are parallel sided. - Recommended for use with a pillar drill. TREND SNAP/PC/12 Snappy Standard Plug Cutters Specification : - Shank Diameter : 1/4 inch hex - Plug size ( D ) : 12.7mm ( 1/2 inch )