Product Description Always the right result: the SBC-1 Gauge by ParkTool This tool is ideal for conveniently determining the length of spokes, ball diameter and the measurement of crank cotters. To determine the spoke length, the spoke is inserted into the measuring hole and its length is simply read off the scale (inches and mm). The dimension for crank cotters and ball diameters is determined by different holes. Made of lightweight anodised aluminium with stamped scales. Technical Information:Material:aluminiumUnits:inches, mmOther:for spokes, bearings and cotter pinsManufacturer Number: SBC-1 Contents:1 x Manufacturer: Park Tool Company 1185 Eagle Lake Rd Shoreview MN 55126 USA info@parktool.com Distributor: GROFA Action Sports GmbH Otto-Hahn-Straße 17 65520 Bad Camberg Germany info@grofa.com