Trend Professional Slotting & Grooving Cutters Heavy Duty Arbor for M12 Bore Slotters Ref: 33/20X1/2 Key Features: Slotters with M12x1.0 threaded bore enables flush recessing in the corner such as for weather proofing Spacers are supplied to ensure the minimal threaded arbor protrudes below the slotter Arbor 33/20 enables 12mm bore guide bearings to be fitted above slotter for self-guiding work Items included: 1 x Arbor 2 x Spacer 4 mm 1 x Spacer 3 mm 1 x Spacer 2 mm Specification:​ OL: 61 mm (overall length) Thread: M12 x 1.0 mm Spigot length incl thread: 20 mm Spigot thread length: 18 mm Shank Diameter: 1/2 inch