1.Our flexible end caps work great for preventing scuffs on the floor, as pliable protective seals for metal chair tips, patio furniture, bench feet, table legs or tips, bar stools, screw or nail heads, or to cover any round tube2.Thread protector cover is made of vinyl rubber material, flexible and insulated, can widely application to furniture, electricity and so on3.Rubber plug cover tip caps are made of soft material, good quality and durable, long service life4.Perfect for covering screws or other threaded partsSpecification :Inner Dia : 8mm(5/16 inch), 9mm(3/8 inch), 10mm(0.4 inch), 11mm(7/16 inch), 12mm(15/32 inch)Package Content :8mm Round End Caps(10pcs)9mm Round End Caps(10pcs)10mm Round End Caps(10pcs)11mm Round End Caps(10pcs)12mm Round End Caps(10pcs)