KargoMaster Accessory- This kit #31580 enables one to securely mount a Pro II (racks for trucks without cap made after May 1, 2005), Pro III, Econo Truck (#30040), or Econo Cab Guard (#30080) rack without drilling into the truck. The kit includes four 1/2" bolts that go through the barrels welded to the side of the foot plate, clamps to go with, and four stake pocket "T" bolts.