Made of high-quality steel to enhance strength and finish. Double wall construction with 3” to 4” spot weld spacing provides strength. Reinforced corner gusset design adds strength and reduces racking. Reinforced corner gusset design adds strength and reduces racking. Full length drawer pulls with positive drawer latching to prevent unwanted drawer opening. All drawers equipped with 75 pound full extension ball bearing slides with quick disconnect. High performance 5" X 2" casters absorb vibrations transmitted to frame while moving on uneven surfaces.Paint pretreatment process both sprays and immerses boxes for added corrosion protection. 1/8" rubber work surface mat and drawer liners protects cabinet and preserves appearance.