Stop slamming your shin into a trailer hitch, and protect your legs with ShinShield! Don't let another day of boating be ruined by bruised and cut shins - a simple one-time installation of ShinShield can help prevent these injuries. Made of durable automotive-grade polymer and a padded rubber covering, ShinShield does not interfere with hitch use and can be left installed while towing. Installation under the ball prevents theft. Fits ball mounts which are 2-1/2" wide that support trailer weights up to 17,000 lbs.