Wera Bicycle Set 12, 12 pieces12 piece Joker 6003 spanner set; size 15 in an extra slim design. As the working space is very narrow when working on your bike, tools are necessary that enable users to work successfully even in such situations. Narrow spaces require additional placement points of the tool. Can spanners be modified so that the placement possibilities of the tool increase? The combination of the 7. 5 offset open end and the double hexagon geometry doubles the