Features:
Rubber gasket set that is installed on the watch back case,can cover the gap between the watch band and movement. Play role in watch waterproof,suitable for watch repair and DIY watchmaker. This is a set of 950pcs new o-rings gaskets,the o-rings different 19 sizes thickness 0.5mm. 19 different sizes from 12 to 30 mm: 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29 and 30mm. Comes 50pcs each size in a poly bag (total: 50pcs x 19 = 950pcs).
Specifications:
Material:rubber
Color: black
Item standard:
Wire diameter: 0.5mm
Coil diameter:(19 model, each model has about 50 pieces ) 12mm/13mm/14mm/15mm/16mm/17mm/18mm/19mm/20mm/21mm/22mm /23mm/24mm/25mm/26mm/27mm/28mm/29mm/30mm

Package include:
1 x Watch gasket set