ProRac adjustable load stops for Pro-File roof racks and pro-file truck cap and tonneau bed cover racks. ProRac load stops are constucted from heavy duty steel for enhanced strength and appearance. The adjustable load stops attach to the pro rac load / cross bars. ProRac load stops offer easy on / off loading and secures load during transit. (Part Number: FGAT954-1). Kit includes 4 adjustable load stops and mounting hardware. ProRac Rack Accessories can generally be attached to non ProRac Brand (Thule Westin) and Factory Style Roof Racks as long as the have a Tee-Slot