One chassis supports two (2) 3” and two (2) 6" drawers. Full extension drawer constructed with heavy gauge steel for durability and ball bearing drawer slides. For use with C-Leg and Easy-Lift Dual-Leg style work benches. Stackable with other drawer units for up to 24" of storage. Lock not included. Locks for 6" drawers are available here. Locks are not compatible with 3" drawers.