Inflatable boat Launch wheel spacers - 25mm(pack of 8). To be used to step out and float above abstacles like drain bungs or recessed transoms(most aluminium Ribs) . Whilst these have been specifically engineered for Beachmaster style wheels to take 6mm bolts they can be used on any style of launch wheel. Obviously one will need to purchase longer s/s bolts - please call us for these. We sell these spacers individually for £2 each. Postage £2 for all eight (economy).