Straight Barrel Stainless Steel Center Cap Open End Plus Plug
I have these on my boat trailer wheels. They work great with Bearing Buddy's installed. The plug end is large enough to accommodate the Bearing Buddy physically and allows enough room to remove the bearing buddy bra to grease the bearings without removing the wheel and cap to gain access. I really like the nice clean look they provide with my new aluminum wheels. The plug cap stays off with this type of installation.
Reviewed by: Charles Wickstrom from San Jose, CA.