Check the listing for details. CF6/KRV16 x M6 Stud Cam Follower Track Runner Bearings (Hexagon Socket). Condition: New. Listed at 13.27 USD. Description:Package: CF6 (KR16) X cam follower track runner bearing 1 pack. Thread size M6x1mm, Roller diameter 16mm/0.63 inch, Roller width 12.2mm/0.48inch, Total Length 28.2mm/1.11inch, (Roller Type: Flat Type)Wide Application: Cam followers, as follower bearings for cam mechanisms and linear motion, have high rigidity and high precision and are widely used in machine tools, industrial robots, electronic parts machinery, internal combustion engine systems, and other projects.How to Use: This cam follower bearing has the hex socket machined on the stud head and can be installed by using the hex wrench to screw it into the machine, and then tighten the matching nut. Clean the work area before installation and apply a proper amount of grease to reduce friction.