Trend Professional Slotting & Grooving Cutters Guided Variable Quad Groover Set Ref: QUADX1/2TC Key Features: This versatile 1/2 inch shank groover set offers grooving widths of 3.2mm, 4.0mm, 4.8mm and 6.3mm It is infiniteley variable from 6.6mm to 18mm in 0.1mm increments A jointing facility using the bearing is also possible Set comprises of four 2 wing groovers with 7.94mm (5/16 inch) bore and an arbor which may be used singly or together to produce a wide range of groove widths One ball bearing comes as standard This set can also be used to tongue and groove 9mm to 22mm board Items included: 4 x 2 Wing groovers 1 x Arbor 1 x Bearing Specification: D: 47.6 mm (metric diameter) C2: 3.2 to 18 mm (metric cut length) B: 22 mm (metric bearing diameter) E: 12.8 mm OL: 76 mm (overall length) Shank Diameter: 1/2 inch SP-QUAD/18: 3.2 mm SP-QUAD/532: 4 mm SP-QUAD/316: 4.8 mm SP-QUAD/14: 6.3 mm