Low kick back, hard chrome cutter chain meets the ANSI B175.1 requirements. Comes in economical clamshell 2-pack. No. S52T: Type: Hard Chromed, Pitch: 3/8", Gauge: .050, Bar Length: 14" No. S56T: Type: Hard Chromed, Pitch: 3/8", Gauge: .050, Bar Length: 16" No. S62T: Type: Hard Chromed, Pitch: 3/8", Gauge: .050, Bar Length: 18"