ICS 71395 Guidebar 12-Inch Fits 680Gc Gas Powered Saw 680GC 12-inch Guidebar Replacement bar for the 680GC and 613GC Concrete Chainsaw Fits 12-Inch TwinMAX chain Hardened rails, inner bearing race Laser-cut internal water channels keep the nose sprocket lubricated Fits the 680GC saw Fits 12-Inch TwinMAX chain Laser-cut internal water channels keep the nose sprocket lubricated