Product Info Catalog Outdoor Outdoor Power Equipment Chain Saws Chainsaw Chain, 33Sl Pro-Guard Premium C-Loop, 20-In. Chainsaw Chain, 33Sl Pro-Guard Premium C-Loop, 20-In. Request a Quote UPC: 36577003205 SKU: 733587 Model Number: H78 20" 33sl pro-guard premium c-loop chain, 78 drive links, chain meets ansi standards & is ul classified, fits: stocked saw 354803. Also echo, husqvarna & poulan chain saws.