CHAIN PITCH: 0.75 IN; CAPACITY TYPE: MEDIUM DUTY; CHAIN CONSTRUCTION: MOLDED-TO-WIDTH; CHAIN STYLE: VACUUM CHAIN; CHAIN WIDTH: 3 1/4 IN; FDA APPROVAL: YES; HOLE SPACING: 0.33 IN; NUMBER OF HOLES PER MODULE: 4; PIN MATERIAL: POLYPROPYLENE; Product Line: Straight Running Chains; Series: MatTop 8500 Series; Model = 8505 with Vacuum Holes (E) (MTW)