Track Roller Closure Double Sealed Drive Type Slotted Duty Type Standard Face Design Screwdriver Slot Overall Length 52 mm Roller Diameter 35 mm Roller Head Type Crowned Roller Material Alloy Steel Roller Width 18 mm Rolling Element Rows 1 Seal Type Contact Stud Material Steel Stud Thread Size M16-1.5 Stud Type Concentric System of Measurement Metric Bearing Material Alloy Steel Bearing Material Grade AISI 52100 Bearing Type Needle Roller Drive Location Stud