This set comprises a quick chuck and three sizes of drill bit guides for accurate fitting of hinges. Contents: 1 x Quick chuck. 1 x Drill bit guide 5/64in. 1 x Drill bit guide 7/64in. 1 x Drill bit...
Counterbore with a slow spiral drill fitted. Tungsten Carbide Tipped for use in abrasive materials. Specifications: D1 3/16 inch D1 4.75 mm D2 1/2 inch D2 12.7 mm Shank Diameter 1/4 inch.