Cam Follower Closure Double Sealed Drive Type Slotted Duty Type Standard Face Design Screwdriver Slot Overall Length 3 1/4 in Roller Diameter 2 1/4 in Roller Head Type Flat Roller Material Plastic Roller Width 1 1/4 in Rolling Element Rows 1 Stud Material Bearing Steel Stud Thread Size 7/8 In.-14 Stud Type Concentric System of Measurement Inch Bearing Type Bushing Drive Location Head and Stud