Park Tool - SBC-1 - Spoke, Bearing & Cotter Gauge S3-Size-13L It features a directional grooved

It features a directional grooved and textured semi-slick tread pattern

To carry only what you need

2 pieces a set

For tightening on right hand threded bolts and nuts

Park Tool - SBC-1 - Spoke, Bearing & Cotter Gauge S3-Size-13L It features a directional groovedPARK TOOL SBC 1 SPOKE, BEARING & COTTER GAUGE This handy shop aid is ideal for sizing spokes, ball bearings and crank cotters. To use, just hang the head of the spoke in the oblong hole and read its length on the scale. For crank cotters and ball bearings, it works just like a gauge for drill bits. Spoke lengths are in both metric and fractional markings. Made of anodised aluminium with embossed markings to allow easy reading and long life.