3834 arbr 11152 arbor 7 16in 32 210mm bahco 3834 arbr 11152qc, 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 handheld machines and, when operating with high workload, 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. Qc arbors have a quick change mechanism and tools are not required to change holesaws. Bahco 3834 arbr 11152qc arbor 7 16in 32 210mm q change