Series 100 Truck, Holds 2 Cylinders, 7 in to 8 in dia, 6 in Semi Pneumatic B.B. Wheels no checkout and benefit from an impurity extracting and benefit from an impurity extracting proprietary washing process Latex and silicone free single locking Proprietary rustproofing for longer life Commercial grade padlock features superior protection from drilling and prying Choose between Keyed Different (KD) Strong and compact in design having excellent balance and rollability All models have a cylinder hold chain and hose supports Concealed angle legs prevent load from resting on wheels when truck is stationary Handles small to medium cylinders Recommended for small shops and garages having hard surface floors