Aardwolf Self-Locking Slab Dollies are a space-saving way to transport slabs, panels or sheets of materials around a workshop or factory floor. Each panel dolly has large pneumatic wheels which provide high adherence on any surface. Self-locking dollies feature vulcanized rubber over the clamps and base, protecting slabs from scratches or chips. Clamps automatically grip slabs or panels as they are placed onto the dolly; the heavier the load, the stronger the grip. Grip range begins at 0-2" on model SL60, and reaches 0-6" on the SL155 slab dolly. Model SL100 has a swivel caster, while all other models have a folding support leg to enable them to stand alone. All Self-Locking dollies come standard with a removable handle, to facilitate transport. Aardwolf Panel Dollies can be easily used by a single operator.