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.
This set incorporates two drill countersinks and matching plug cutters. Plugs cutters are made from Tool Steel and are very slightly tapered. Use on timber to drill a countersunk hole for a screw which is then plugged uses a plug/pellet made using the plug cutter. Recommended that plug cutters are used in a pillar drill. This product includes: 1 x Drill/countersink for No. 8 x 9.5 mm 1 x Drill/Countersink for No. 10 x 12.7 mm 1 x Plug cutter 9.5 mm (3/8 inch) 1 x Plug cutter 12.7 mm (1/2 inch)
Magnetic chuck accepts Trend Snappy shank fitting tools and insert style screwdriver bits. Magnet will hold wood screws when used with insert bits. Accepts 50 mm screwdriver bits and 25 mm screwdriver bits. Small diameter.