The 3834 Series Arbors are available in a range of sizes suitable for different chuck capacities. Shank Size. 11.1 mm The design of the 11152 arbor makes it suitable for 32-210 mm holesaws, it eliminates play and increases the strength of the holesaw by redistributing the load from the thread to the solid cap. These are to be used with hand held machines and, when operating with high work load, in static machines.All arbors are hardened for maximum strength. The 11152 arbors have drive pins to transfer large cutting force from the holesaw to the power unit. Carded