8-13mm Metal Hollow Tube Concave-convex Shape Nail

Outer diameter: about 8mm/9mm/10mm/11mm/12mm/13mm Length: about 21mm/24mm/27mm/30mm/32mm/33mm Inner diameter: about 3mm Material: Stainless Steel Color: Silver Package: 1 x tube The product size may have a little error due to different measurement methods,measuring instruments, and factory production batches.It is not a quality problem or the size description does not match. Thank you.