Roadmaster 523182-4 Vehicle Baseplate EZ4 Series. Removeable Tabs without safety cable hooks. Includes Four 1/2 Inch x 3-1/2 Inch Bolt/ Four 1/2 Inch Lock Washer/ Four 1/2 Inch Hex Nut/ Two Side Receiver/ Two Side Arms. Includes Hardware. 2015-2019 Chevrolet Colorado and 2015-2019 GMC Canyon.