Description Name : PVC End cap Material: Vinyl End Caps Inner diameter:3~8mm Color: black Package Include: 10 X Kite Cap Features: Our Soft Vinyl End Caps are available in a multitude of sizes and are packed in various quantities to suit your needs. End Caps are traditionally used to protect the kite fabric from the ends of your carbon or glass fibre spars as without this cushioning the spars would penetrate the fabric. The sizes stated is the inside diameter as these are to fit over the relevant sized spar.