Product Details:

Produce a Smooth, Round Countersunk Hole Every Time.

Best Countersink Available for Aluminum.

Cut Degree is 82º.

The CRL Weldon Countersinks were specifically designed to cut round countersunk holes in aluminum.

They cut faster than standard countersinks and leave a finished hole every time.

Smooth drilling action from single cutting edge prevents chatter and fluted edges.

The 1/4 inch (6.4 millimeter) shank diameter fits any 1/4 or 3/8 inch (6.4 or 9.5 millimeter) drill chuck.

Hole Size: No. 10 Screw