30 Chain Tool box Battery Box Peterbilt 379 359 385 377 378 Truck Aluminum Step Posted on December 6, 2023 by admin 30″ x 15.5″H Chain Tool box Aluminum Step For Peterbilt 379 359 385 377 378 US. FIT: Peterbilt 379, 359,385, 377, 378,357 and others. Rugged Aluminum Diamond Plate. Size: 15.5″(H) 30″(D) 30(W).