Hard wearing steel tool body complete with four alternately sheared tungsten carbide knives for machining large surface areas suitable for producing wide grooves and rebates in softwood hardwood and man made boards with or without coating on a spindle moulder cutting width can be adjusted in 0 1mm steps by using supplied spacer rings d160 mm cut length50 6 100 mm bore1 14 inches no of teeth44 max projection depth40 mm recommended speed4800 8000 rpm