TStak Deep Drawer Box, With 6 Removable Cups, Flexible Platform Allows Different Combinations, All Units Can Stack On Top Of The Other, Connected With Durable Slide Latches, Removable Covered Cups For Organization Of Small Parts & Accessories, Removable Dividers For Organization Of Drills & Bits, Ball Bearing Slides Reliable For Heavy Duty Loads, Bi-Material Handle On Top Of Each Unit For Easy & Comfortable Lifting, Heavy Duty Metal Latches For Rust Resistance.