Track Roller Closure Double Sealed Drive Type Slotted Duty Type Standard Face Design Screwdriver Slot Overall Length 28 mm Roller Diameter 16 mm Roller Head Type Crowned Roller Material Alloy Steel Roller Width 11 mm Rolling Element Rows 1 Seal Type Contact Stud Material Steel Stud Thread Size M6-1 Stud Type Concentric System of Measurement Metric Bearing Material Alloy Steel Bearing Material Grade AISI 52100 Bearing Type Needle Roller Drive Location Stud