Product Details:

• Produce a Smooth, Round Countersunk Hole Every Time
• Best Countersinks Available for Aluminum
• Cut Degree is 82º

CRL 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. Set contains one each of the following plus a handy stand: 6SCS- Countersink for No. 6 Screws 8SCS- Countersink for No. 8 Screws 10SCS- Countersink for No. 10 Screws 18CS- Countersink for No. 12-16 Screws