950pcs Bag ORing Watch Back Case Bottom Cover Waterproof Ring Watch Repair Tool(0.5mm )

Feature: 1. The gaps between the strap and the movement can be covered to make the watch waterproof. 2. Professional watch repair tools, excellent DIY watch repair accessories and suitable for watchmaker. 3. O?rings and 19 sizes can meet your different needs, designed for watch repairing. 4. Made of high quality rubber material, long service life, durable and practical. 5. Excellent substitute for all sizes over 12mm?30mm, wonderful watch accessory. Specification: Condition: 100percent Brand New Item Type: Watch O?Ring Material: Rubber . Package List: 1 x Bag of Watch O?Ring