A range of arbors to suit various 1/4" bore arbor mounting cutters including the groovers below. They are available in 1/4", 3/8", 1/2" and 8mm shank sizes. More than one cutter may be mounted on the arbor to produce the cutting width required. It is not advisable to use more than 2 cutters on the 1/4" shank versions. N.B. THE ARBOR IS SUPPLIED COMPLETE WITH A SET OF SPACERS.