Stud Roller, Closure Open, Drive Type Hex Socket, Duty Type Standard, Face Design Hex Socket, Overall Length 1 1/2 in, Roller Diameter 2 in, Roller Head Type Flat, Roller Material Nylon PA Glass Fiber Reinforced, Roller Width 23/32 in, Rolling Element Rows 1, Seal Type Not Applicable, Stud Material Carbon Steel, Stud Thread Size 5/16 In. -18, Stud Type Concentric, System of Measurement Inch, Bearing Material Bronze, Bearing Type Plain, Drive Location Stud, Flange Diameter Not Applicable. This item has been restricted from sale in the following state (s): []