Shining coating finish, aluminum drawer extrusion puller, quick release design in ball bearing slide can be easily removed or replacement, internal locking key system, caster and body reinforcement for stonger design. Specification of JST-4417-A: Overall: 55.5x18.4x19.5in 1410x470x499mm Package: 59.6x23x26.2in 1515x585x665mm 4 Drawers: 19.0x16.0x3.0in 485x408x78mm 4 Drawers: 29.6x16.0x3.0in 751x408x78mm N.W.: 73kg G.W.: 78kg 20' Container: 42PCS 40' Container: 108PCS Specification of JST-4417-B: Overall: 56.0x18.8x39.5in 1423x480x1003mm Package: 60.4x23.4x48.2in 1535x595x1225mm 1 Drawer: 51.0x16.4x7.2in 1296x418x184mm 5 Drawers: 29.5x16.4x4.2in 751x418x105.5mm 1 Drawer: 19.9x15.5x3.5in 506x393x90mm N.W.: 126.5kg G.W.: 134.5kg 20' Container: 17PCS 40' Container: 54PCS