Cartoni Dollies are designed and manufactured with the highest quality alloys. All wheel groups are assembled with high precision bearing and equipped with positive individual locks. Each wheel group can be located in 6 different positions at 60° allowing a smooth precise translational movement even without tracks. This aluminium extendable Dolly is for Heavy Duty Tripods (1 and 2 stages + Baby). Compatible with Pneumatic wheels for OB use.