Husky Towing Custom Mounting Bracket Kits are designed for ISR Series Rails and are engineered to fit your truck without ordering extra kits. Installation of the 5th wheel over the truck's axle is simplified and requires less drilling than similar brackets on the market. The use of top-quality materials and manufacturing ensures safety and years of reliable service.• Creates a solid mounting point for 5th wheel rails and hitches• 2-piece mounting plates• 4-bolt rail mounting style• Tested for safety in accordance with SAE J2638• Zinc-plated fasteners• Use with Husky 30686 rails• Drilling required• Fits 6.8' bed• Fits single rear wheelApplications'20-'25 Chevrolet Silverado 2500 HD'20-'25 Chevrolet Silverado 3500 HD'20-'25 GMC Sierra 2500 HD'20-'25 GMC Sierra 3500 HD 2-piece mounting plates & 4-bolt rail mounting style Designed for use with Husky 30686 rails Tested for safety in accordance with SAE J2638 | Husky Towing 33220 Fifth Wheel Trailer Hitch Mount Kit, Chevrolet Silverado, GMC Sierra