PTRK Series 19" Portable Racks Secure, rolling rack perfect for portable applications Welded construction for a substantial 500 lbs.weight capacity 16 ga. 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, 11 ga. threaded front rackrail Finished in a durable textured black powder coat