Birzman Spoke Wrench Description: Birzman Spoke Wrench is compatible with 12-15G spoke nipples and Shimano 4.3/ 4.4 spoke nipples, the Spoke Wrench is a six-in-one tool with tight tolerance made from durable CrMo. A 5mm hex hole placed in the center of the tool enables users to combine the spoke wrench with 5mm hex wrenches to impart addtional leverage on stubborn spokes. Features: Handy multi-size spoke wrench compatible with various spoke nipple sizes Features a 5mm hex hole in the center so a hex may be used for additional leverage Compatible with 12-15G and Shimano 4.3/ 4.4 spoke nipples Specifications: Material: Cr-Mo Color: Silver