Lant cu X-ring 12o zale Produs Premium Exclusively manufactured for ProX by the reputable and leading OEM factory in Japan Pins features special treatment providing an extremely hard coating, leaving softer inside to increase strength while reducing overall chain wear Pins are heavy press-fitted and do have quad staked riveting for ultra strong connection Solid type bush, roller and plates are all heat treated for incredible tensile strength in combination with low friction andhigh wear resistance Inner plates are designed in specific shape and in combination with unique lightning hole resulting in 3% overall lighter chain X-Ring type chain uses QX-type seal offering 40% less friction and at least 150% increased durability over standard MX chain All chains are pre-stressed and pre-stretched to reduce initial chain stretch and immediate performance Chains come with a clip type chain link as standard Separate chain links available for each type of chain