05-622 Castor PU, w/ thread, without brake

– Soft noiseless motion, outer layer is made of high quality PU.
– Castors are made of good quality plastic material.
– Castors don’t have odour.
– Castors don’t leave “black lines’ on floor when used.
– Castors don’t deformed under the standard load.
– Packed 4 pcs in a polybag.

PU – is bright, with smooth surface and good resistance, more expensive, better quality.
PVC – softer material, surface is matte, price is lower.

Buffer layer must not be very soft, it must resist the pressure. In fact, if it looks like a rubber and is very soft, this quality is low, it doesn’t have enough resist and will wear out very quick.