Exclusive Version with high load Capacity and qualitative LongevityOriginal 100% Made in Germany!Swivel castor, steel frame, zinc-plated with blue passivation, double ball race swivel, bolted wheel axle, swivel bearing protectionPolyamide wheel with non-marking elastic tyre, roller bearing, mounting plateTrackless Polyamide Wheel with Roller Bearings and Track Rollers made of Natural RubberWith precision Ball Bearing and special direction self-adjusting Feature ( in 0-position )Thread guard with wheel bearing protectionWith autom. Spring return for optimal stackability