Quick Release Axle Nuts ! Axle Hardware ! These Wing nuts predate Skewer Axles. More Nuts than you would ever believe you would ever see ! I can't identify all of them so just winging it. Axle Wing Nuts / Axle Nuts Options are: Set = 2x Front & 2x Back - or - a Pair 2x Front or 2x Rear - or Singles 1x Front or 1x Rear -.
eBay