【21mm INNER DIA】21mm Inner Dia Black Vinyl Round End Cap Covers 【GOOD PROTECTOR】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 tube 【SIZE SELECTION】Because rubber material is soft and elastic, we recommend choosing a rubber end cap that is slightly smaller than the outer diameter of the product to be protected. For example, the outer diameter of your product is 9.8mm dia, choose the rubber cover of 9.5mm! 【FLEXIBLE VINYL MATERIAL】 Thread protector cover is made of rubber material, flexible and insulated 【WIDELY APPLICATION】 Perfect for covering screws or other threaded parts, round tubing, furniture feet, and so on 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 tube

2.Thread protector cover is made of vinyl rubber material, flexible and insulated, can widely application to furniture, electricity and so on

3.Rubber plug cover tip caps are made of soft material, good quality and durable, long service life

4.Perfect for covering screws or other threaded parts