Medical / Industrial Caster, Threaded Stem (metric), With Brake - Item #1100-75-TS-WB 3 in.
(click photo to enlarge)
Wheel Diameter: 3 in. (75mm)
Overall Height: 4-1/2 in. (90mm)
Mounting Method: M12 x 25mm Threaded Stem (Metric)
Material: Housing; Polymide+glass fiber Wheel; Core Polypropolene with Thermoplastic Elastomers Tread, Wheel Core; Polypropolene
Brake: Yes (double lock - wheel and swivel)
Load Rating: 154 lbs (70 kg) per caster