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.
Merry Christmas and a Happy New Year from all of us here at JDW! Our last day for dispatch is Tuesday Dec 23rd. We are back to normal operating hours Jan 2nd.
