390pcs 39 Sizes 1.9-7mm Japan Waterproof Mini O-ring Kit for Watch Crown Seal390pcs 39 Sizes 1. 9 7mm Japan Waterproof Mini O ring Kit for Watch Crown Seal Inner Diameter: 1. 9 7mm 10pcs for each size, 39 sizes for each box, total 390pcs set

Natural latex material

dismounting arm

It is very compact and easy to store so you can take your watches and yours straps with you wherever you go

The measurement allowed error is +/- 1-3cm

The handle will give extra grip to open tough cases

thickness at a general speed of 1M per minute with RPM 3000 max

screws and winding stems etc

Asian Dandong Silver Hollow Bare Balance Wheel Automatic Mechanical Movement

FIT FOR ETA 2000  movements

Hattori VX50

Alloy Material: Made of alloy

Green luminous