Cutting Edge Chainsaw Chain Loop SKU: 130991 MODEL: C510-178 Error. try again later You've successfully joined the club $ 64 .98 each Mitre 10 MAvailable at Mitre 10 MEGA stores. Variants 8.3mm (0.325 inch) pitch x 1.27mm (0.050 inch) gauge. Features and benefits Steel from USA. Fits on 508mm (20 inch) bar. 78 drive links.