4" x 2" Polyon MaxRok Wheel Swivel Caster - 700 lbs. capacity Drum Dollies or a brake or swivel

or a brake or swivel lock is required but not listed

and bearing type Roller Bearing

893010 Capacity 40 gallon(s) Compliance NFPA

The listed model or part number is 240057

4" x 2" Polyon MaxRok Wheel Swivel Caster - 700 lbs. capacity Drum Dollies or a brake or swivelProduct Overview Polyon maxrok wheels are made from a polyurethane elastomer tread bonded to glass filled nylon, providing incredible impact strength and a fairly high load capacity for the weight and price. The elastomer tread provides some floor protection, making these wheels great for concrete and warehouse applications. The nylon compound is resistant to grease, oil, and most chemical and cleaning solutions. Tread: Polyurethane Elastomer