Unlike the C series, the K series has only 3 swivel castors. The mainwheels have hydraulic brakes and the nosewheel castors. Castors and wheels are manufactured under the TENTE registered trademark. Centre wheel drive powerchairs have castors at both front and rear for a six-wheel layout. The wings had small castors on outriggers that were lowered with the flaps. The seating was a revolving stool on castors for maximum flexibility. It develops and produces castors and wheels specifically for the US market. Early versions of the Daleks rolled on nylon castors, propelled by the operator's feet. This division provides transport equipment castors, heat-resisting castors and noise-reduced castors, for example. The Silk Dressing Room contains a large tin bath on castors. Early cetaceans, archaeocetes, show double castors, which occur only in even-toed ungulates. Beaver castors are used in many perfumes as a sticky substance. Shand Kydd closed in 1980 when the premises were taken over by Revo Castors. In 1982 they moved from Sherbrooke and were formerly the Sherbrooke Castors. The TENTE designer castors have been awarded international prizes.