Makes chainring bolt set installation and removal easyDouble-ended to fit most slotted-type nutsOne end has a two outer tips nominally 2.7mm wide each, and the other end has tips of 3.8mm eachThe outer width of both ends of the CNW-2 are nominally 12mm wideChainring Bolt SpannerCNW-2UPC/EAN/GTIN: 763477002068