The Cb Counterbores Are Extensively Used For Recessing Bolt And Screw Heads. Supplied With A Hss Slow Spiral Drill Bit. Fully Adjustable A Hex Key Is Supplied. Tct Version Is Used For Plywood Particle Boards And Plastics (Abrasive). Use A Drilling Speeds Only. Not Suitable For Ferrous And Non-Ferrous Metals. When Setting-Up Ensure Flutes Of Drill Are Aligned With Flute Of Counterbore. For Replacement Twist Drills Use Slow Spiral Type E.g 501/532 To 501/012.PTDTREDIRCB3414TC
