Cobalt Countersink 5 Piece Set

100 degree Cobalt Countersink 5 Piece Set Number-size Pilots

Prepare holes for flush mounted rivets with these cobalt countersinks.

• Set Includes: #40, #30, #21, #10 & 1/4″
• 3 Fluted
• 1/4″-28 threads
• 1/2″ body diameter