Watch Second Hand Assortment Different Shaft Holes 1.7-2.5mm For Repair Ac6020. There are 15 specifications, each specification has 5 colors x 3pcs, a total of 225pcs. Model HOLE Height No. 1 170 0.7 No. 2 170 1.0 No. 3 170 1.3 No. 4 170 1.5 No. 5 170 1.8 No. 6 200 0.7 No. 7 200 1.0 No. 8 200 1.3 No. 9 200 1.5 No. 10 200 1.8 No. 11 250 0.7 No. 12 250 1.0 No. 13 250 1.3 No. 14 250 1.5 No. 15 250 1.8. Note : The first time when the watch hands installed may be tight, if it is tight, you can use the fine embroidery needle gently to flush the eye of the needle.