The Granite Design Stash Tyre Plug Refill - 10 Piece keeps your tubeless tyre plug kit topped up and ready for the unexpected out on your rides. It's available in both 1.5mm and 3mm widths. This tyre plug refill kit is designed for the Granite Design STASH tubeless tyre plug kit. About Us | Contact | Delivery | Returns | Sizing. As a UK based company, all of our products are listed from the UK size. For clothing not usually sold in traditional sizes (S,M,L), sizes are displayed based on the standard UK conversion as follows: XXS - 6 | XS - 8 | S - 10 | M - 12 | L - 14 | XL - 16 | 2XL - 18 | 3XL - 20 | 4XL - 22. We have a has;