Gunn & Co classic large flange 36 hole polished alloy rear hub. Traditional vented flanges with sealed bearings. Flip-flop allowing the rider to run either single speed sprocket or by changing the washers; upto a 5 speed block with a fixed sprocket on the other side. Supplied complete with a 16 tooth fixed sprocket and locking ring. weight: 320 grams. (395 grams with the sprocket and lock ring.) RRP: £39.00