Stainless Steel M8 Paddock Stand Bobbins. Our bobbins are manufactured in the UK by our skilled engineers. These bobbins are made from 303 Stainless Steel. Includes: 2 x stainless steel bobbins. 2 x M8 x 40 A2-70 Stainless Machine Cap Screws for quick assembly / removal with your standard bike tool kit.