General description This Sterrett A10 Arbor is designed to suit holesaws with diameters ranging from 32mm to 210mm. It features a quick hitch mechanism that allows for instant changes of holesaws without the need for tools or removing the arbor from the chuck. Technical specifications Diameter compatibility: 32mm - 210mm Pilot drill size: 6.5mm / 1/4 in Shank size: 8.75mm hex Chuck capacity: 9.5mm Other information Suffix E denotes extra-long pilot drill.