Product_description: ['Characterized by new and better performing round section O-rings ÿ Light and strong ÿ High carbon alloy pins, solid bushings, shot-peened plates and rollers ÿ All O-ring chains are submitted to performance enhancing pre-stretching ÿ "Gold" outer plates ÿ All chains undergo pre-loading to increase fatigue and wear resistance ÿ'] (Page 1)