Track Roller Closure Double Sealed Drive Type Hex Socket Duty Type Heavy Face Design Plain Overall Length 74.1 mm Roller Diameter 52 mm Roller Head Type Flat Roller Material Bearing Steel Roller Width 33.6 mm Rolling Element Rows 2 Stud Material Bearing Steel Stud Thread Size M20-1.5 Stud Type Concentric System of Measurement Metric Drive Location Stud Dynamic Radial Load Capacity 17 000 N