Cam Follower Closure Double Sealed Drive Type Slotted Duty Type Standard Face Design Screwdriver Slot Overall Length 1 5/8 in Roller Diameter 1 in Roller Head Type Flat Roller Material Plastic Roller Width 5/8 in Rolling Element Rows 1 Stud Material Bearing Steel Stud Thread Size 7/16 In.-20 Stud Type Concentric System of Measurement Inch Bearing Type Bushing Drive Location Head and Stud