Modelcraft shim washers packs of 20 modelcraft 20stverpackt modelcraft shim washers 14 x 8 x 02mm pack of 20 are hardened and ground to size shim rings which are used instead of normal washers particularly in gear manufacturing as a spacer washer between gearwheels on axles and shafts modelcraft 20stverpackt shim washer 14x8x02mm pk20