Superclamp - Rail Anchor Kits, 48"The SUPERTRAC is a multi purpose, fully adjustable and lockable tie down anchor system for use anywhere you need to tie down and secure cargo. SUPERTRAC can be installed in pick up trucks, trailers, vans or just about anywhere you need to add an anchor point to tie down your cargo. 48" KIT CONTENTS 1 48" length of Supertrac 1 Supertrac Deck Hook 12 pcs of stainless steel hardware 2 End Caps Screws