OREGON 72LPX100U 100-Feet Reel of Super 70 Chisel Chain, 3/8-Inch Recommended saw size: 50 to 100cc, bar length: 16"-36" (41-91cm) Standard sequence: 72lpx: 3/8" pitch, .050" gauge; 73lpx: 3/8" pitch, .058" gauge; 75lpx: 3/8" pitch, .063 gauge X grind-enhanced grind geometry significantly improves out-of-box sharpness with substantial speed improvement in boring and bias (undercut) modes Blued cutters provide superior corrosion resistance Warning: oregon 72l, 73, and 75lpx super 70 chains may be capable of kickback that could result in serious injury to the saw operator or bystanders