Production Description:
Size: These watch crown o rings come in 12 different sizes(1.4 mm to 2.8 mm), quantity of each size approximately 65 pieces(about 700-800 pieces in total) to meet the different replacement needs of watch repair workers. The box size is 3.46"L x 2.16"W x 0.7"H.
Material: Made of high-quality rubber, these o-rings assure long-term use with excellent sealing and high temperature resistant, strong tensile strength, are flexible and wear-resistant.
Design: Suitable for watchmakers and watch repairing workers to use to keep your watch water resistant. These crown rings come with a storage box, which can be effectively classified and stored, and it is convenient and quick to find the size.
Use: Make your watch waterproof, multiple sizing options make it easier suitable for many of watches to repair various models of watches and extend the range of repair possibilities, is good accessory for watch repairing. These crown rubber rings are highly elastic.
Note: Pleas you do not mix up the sizes when opening the packaging box, use a clever opening method.

Package Included:
700 Pcs Watch Crown O Ring