1/2″ x 13 x 6 1/2″. Be sure and use the nylon nuts also. I dont over tighten these either. It will definitly give the flat bar are good bow. Just snug will do. The rubber and the smart placement of the rack prevents the spare from moving around2013 PANTERA 2MERCURY 200 PRO XSMINNKOTA 80LB FORTREX25 fury
.
