The Andersen Hitches Anti-Slip Kit is a 41.5" x 37.5" rubber mat that's a perfect partner for the Ultimate 5th Wheel Connection. It sits on the bed of the truck beneath the Ultimate 5th Wheel Connection. The Anti-Slip Kit provides extra grip between the Ultimate and the bed of the truck, all while protecting the bed from any potential scratches.• 41.5" x 37.5" x 0.25" rubber mat• Recommended for trucks with a spray-in bed liner• Compatible with all gooseneck mount versions of the Ultimate Connection Provides extra grip between the Ultimate & the truck bed Recommended for trucks with spray-in bed liner Compatible with all gooseneck mount versions of the Ultimate Connection | Andersen Hitches Anti-Slip Kit for Ultimate 5th Wheel Connection