Each set is 4" thick clear acrylic (some sets have a very slight yellowing of the acrylic, but only noticeable when place on white surface.
Each Caster is spiked on one side and a smooth cup on the other, this spiked feature keeps your carpet from being crushed by furniture legs. The spikes also keep your furniture from sliding around.
Information off of the original box:
Caster Cups Protectors Protects Carpet! Won't crush your carpet! Use under furniture legs 4 inch Great for under bed casters Caster Cups can be used on: Tables, coffee tables, desks, sofas, chairs, foot stools, beds. Direction: Place furniture leg or caster in center of cup. Contains Round spiked Caster Cups Soft Touch by Waxman
I will be removing these casters from their original boxes and wrapping them in bubble wrap and then shipping them in a USPS priority flat rate padded mailer. This is the least expensive way to mail these as they are approx 1 lb and 4 ounces in weight.
Very nice quality thick clear acrylic spiked caster cups. Set of 4