... etc. 2. Excellent Flexibility, anti-friction 3. can take care of floor 4. hight stickiness rubber foot features"Attention:Custom-made is ... trial order before mass production. 1. Materials advice: silicone and rubber (EPDM, also NBR, SBR, CR, NR, etc),as your request ... bag inside, strength carton outside, or as your request.Pictures: rubber foot