LAN71 mitre cutter extension arbor. The arbor is blanked from 31.7mm. (1-1/4")o.d. S7 tool steel hardened to HRC 56 and then precision ground by McKenzie Tool Grinding. This arbor extends the effective cutting length to more than 130mm. allowing chainstay mitreing in one pass. Arbors are available in 5/8" shank x 5/8" bore, 3/4" x 5/8" and 3/4" x 3/4". The arbors are $147.50 plus shipping from Portland. To order, please contact Andy. PayPal and good check accepted.