Interchangeable Pilot Counterbores Are Used For Counterboring And Spotfacing With Varying Pilot Hole Diameters.
Toolmex Interchangeable Pilot Counterbores are made of high speed steel for long lasting durability. Allows one counterbore size to be used for various pilot hole diameters. Overall lengths are 3" to 9-7/8" Cutting diameters are 3/16" to 3" Pilot hole inches are 3/32" to 1/2"
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