This item is in the category Business & Industrial\CNC, Metalworking & Manufacturing\Metalworking Tools\Metalworking Inspection & Measurement\Gauge Blocks. 2pcs 1/4'' shank canoe flute and bead router bit cutter woodworking tool pear 4-1/2 x 3-1/2 x 3. Clamping slots for easy mounting on workspaces.