Profile: Trewhella Bros UK supplies container handling equipment. Our products include monkey winches, strap & other winches, jacks, container castors, container bogies, container jacks, fencing tools and grabs. Our T3 castors are used for moving containers up to 3 tonnes. The unit is fitted with an optional parking brake. A pneumatic tyre is used in the application shown, although we offer the options of cushioned or foam filled tyres, which have a slightly higher weight capacity.