CURT 60680 Double Lock EZr Gooseneck Hitch with Flip and Store Ball, 30,000 lbs., 2 5 16 Inch Ball, Fits Select Chevrolet Silverado, GMC Sierra 2500 HD, 3500 HD 5th Ring terminals are preferred for spring Ring terminals are preferred for their fixed design ball capacity Couples to 2" couplers or lunette eyes with a 2 1 2" or 3" inside diameter Cast iron construction is austempered for superior strength and wear resistance Textured One person installation requires no welding or truck bed removal Center locator eliminates the need to measure where the ball hole should be Double locking pins for superior trailer and trailer ball security Flip and store ball keeps truck bed free of obstructions Vehicle specific design optimizes strength and installation time Removable chrome plated 2 5 16" trailer ball fits most gooseneck trailers Chrome plated trim ring provides a finished look Rubber hole cover helps prevent corrosion in trailer ball hole Heavy duty 3 8" diameter handle for solid operation Includes strong 5 8" safety chain loops and grade 8 hardware Protected by a highly durable carbide powder coat finish Tested for safety in accordance with SAE J2638 Limited lifetime warranty (one year finish see the CURT application guide)