FROM HILL ENGINEERING, A 40-PIECE SHIM SET FOR CLASSIC FERRARI MODELS. SET INCLUDES: 8 x 101039 - 1.0 mm shim8 x 107338 - 1.5 mm shim8 x 107339 - 2.0 mm shim8 x 107340 - 2.5 mm shim8 x 107341 - 3.0 mm shim