The Reese 30145 Safety Chain Attachment connects directly to RAM pickups with factory installed OEM under-bed rail system only. Sold as each.• Pop-in ball• Lever inside ball head activates ball bearing locking system• Lift and turn lever to unlock and remove ball• Two safety chain holders required (sold individually)• Hole cover keeps Pop-In Ball sleeve free of debris• Storage bag included• Ball rated for 30, 000 lbs. capacity• Fits RAM OEM Kits with factory-installed OE rail system only Lift & turn lever to unlock & remove ball Hole cover keeps Pop-In Ball sleeve free of debris Two safety chain holders required (sold individually) | Reese 30145 Safety Chain Attachment for Ram with OEM Rail System