This extender set can basically solve your trouble for?broken watch winding stems
Inner diameter x Outer diameter: mm
0.7 x 0.7, 0.8 x 0.8,0.9 x 0.9,0.7 x 0.8,0.7 x 0.9,0.8 x 0.9,0.8 x 0.7,
0.9 x 0.7,0.9 x 0.8,1.0 x 0.9,1.0 x 1.0,1.2 x 0.9,1.2 x 1.2
5pcs for each size, 13 sizes, 65pcs in total per set
