Roller Attachment Link, Attachment Number SK-1, Attachment Type Tab, Material Stainless Steel, Chain Overall Width 1.398 in, Chain Number 80, Roller Diameter 5/8 in, Finish Plain, Pitch 1 in, Link Type Roller Attachment, Attachment Location Two Sides, Centerline to Attachment End 1.396 in, Centerline to Hole Center 0.969 in, Chain Construction Riveted Pin, Extended Pin Diameter Not Applicable, Features Greater Fatigue Strength, Higher Horsepower Ratings, Longer Wear Life, Heavy Series No