MetrInch Spanner Set 14 Piece MET-012514 Piece Metric and Inch Wrench Set is the equivalent to a 41 piece conventional set! These wrenches handle all nuts and bolts Metric, Standard, and even ones with rounded or worn edges. This set is made from quality Chrome Vanadium Alloy Steel. Truly the last set of wrenches you will ever need. Comes in a heavy duty carrying case. The solid chrome vanadium tools are backed by a lifetime warranty (Note: plastic case is not included in the lifetime