Track Roller Closure Double Sealed Drive Type Hex Socket Duty Type Standard Face Design Hex Socket Overall Length 7 15/16 in Roller Diameter 5 in Roller Head Type Crowned Roller Material Bearing Steel Roller Width 2 3/4 in Rolling Element Rows 1 Stud Material Bearing Steel Stud Thread Size 2 In.-12 Stud Type Concentric System of Measurement Inch Bearing Type Needle Roller Drive Location Head