500pcs/Set 31-40mm Rubber O-Ring Watch Back Cover Seal Gaskets Repair Parts

Specification:
Material: Plastic
Wire Diameter: 0.8mm
Inner Gasket Diameter: 31mm, 32mm, 33mm, 34mm, 35mm, 36mm, 37mm, 38mm, 39mm, 40mm {Each Size 50 Pieces)
Rubber watch 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

What's included:

If there is any questions, just contact us, we will alway be here for you.