Product Info Catalog Outdoor Outdoor Power Equipment Chain Saws Chainsaw Chain, 34Sl Pro-Guard Chisel C-Loop, Fits Husqvarna Models, 20-In. Chainsaw Chain, 34Sl Pro-Guard Chisel C-Loop, Fits Husqvarna Models, 20-In. Request a Quote UPC: 36577008163 SKU: 552620 Model Number: J78 20" 34sl pro-guard chisel c-loop chain, 78 drive links, chain meets ansi standards & is ul classified, fits husqvarna models 33, 38, 40, 42, 44, 45, 50, 51, 55, 57, 133, 140s, 154, 234, 238, 240, 242, 254, 257, 340 & 444.