APT High Speed Cobalt Boring Bar Sets

Premium 8 percent cobalt M42 high speed steel, heat treated and hardened to Rc 66-68.

Available in two lengths. Short provides maximum rigidity for counterboring and short hole boring. Long with offset taper and extra length provides more rigidity for deep hole boring. Ground shanks.



Min. Bore:1/4"-1/2"
Max Bore:3/4" - 2-1/2"
Type:10 pc.
Length:2-1/8" - 3-7/8"

WARNING: These products may expose you to chemicals including Nickel, Chromium, or Lead, chemicals known to the State of California to cause Birth Defects and/or Cancer. For more information go to www.P65Warnings.ca.gov.