Ideal for all types of floors, do not scratch floors, distinguished by their good flexibility and abrasion resistance, the highest quality!!!! Their advantages are: do not creak soft material universal mounting system easy installation solid construction suitable for all types of flooring Non-slip, quiet Perfect gift for newborn parents, newborn mother, newborn father, baby shower, birthday, Christmas, festival and so on. standard pin 11 mm, length: 22 mm equipped with 4 ball bearings, durable rod wide tyre that allows you to roll freely smooth rotation Dimensions/ Technical specification: Material: rubber tyre, rubber Material: stem: high-quality steel, wheel diameter 50 mm pin length: 22 mm Pin diameter: 11 mm load: up to 60 kg per peg without brake colour: black Set of Rubber Wheels 50/11 mm do not scratch floors type: tiles vinyl wood carpet- carpet Elegant appearance.