Rolling Rack Perfect for Portable Applications; Welded construction for a substantial 500 lb. weight capacity; 16-gauge steel throughout; Laser-cut 1/8" thick internal braces adds strength; Smooth-rolling 4" cushion casters; Locking front & rear doors standard; Slots in bottom for tying cables and boxes; Rubber padded spring-loaded handles top mounted for balance; Fully adjustable 10-32 threaded front rackrail; Finished in a durable textured black powder coat; Available with a graphite-marbled laminate top and latching plexiglass front door.