Oregon CORDLESS 40 Volt MAX 548182 14-Inch Replacement Guide Bar for CS250 Small-radius nose helps reduce kickback energies. Slim symmetrical contour is light in weight, maneuverable, and reversible for long life. Patented Cradle nose sprocket design increases sprocket-nose life. Lubri-Dam oil-retaining feature prevents oil from running out on the bar's tail, keeps more oil on the bar and chain. For use with 91 low profile chains (Oregon PowerNow #548179 PowerSharp 14-inch chain, or Oregon PowerNow #550685 91PX 14-inch chain)