BRAND NEW Set of 8 black rubber 'O' ring slide buffers. Universal fit for all brass instruments and brands, manufactured in the UK. Outer diameter 12mm (stretches to 17mm), inner diameter 10mm (stretches to 15mm) - 1mm thick. RRP NEW £4.00 per set of eight. Contact Cheshire Music for bulk purchase prices. Postage costs 69p by Royal Mail 2nd Class.