AR-668 Waterproof O Ring Watch Back Gasket Washers 30 Sizes Total 90PCS/Box

Feature:

• 1. Install waterproof O‑ring to the watch or replace the waterproof ring, ensure the waterproof function of watch.
• 2. Contains 90 different sizes of the waterproof ring, suitable for different watch types and watch model to use.
• 3. Included storage box makes your articles not easy to lose and more convenient to storage, convenient to use.
• 4. One of the professional watch repairing tools, suitable for repairmen and amateurs to save expensive repair costs.
• 5. Small and convenient, easy to carry and convenient transportation, exquisite workmanship, no scratching for watch.

Specification:

• Item Type: Waterproof O Ring
• Material: Plastic  
• Applicable People: Watch maintenance professionals
• Application Scenario: Used to add waterproof ring to the watch or replace the waterproof ring
• Width: Approx. 0.9mm / 0.04in

Double Ends Diameter: Approx. 17.34 x 18.5mm / 0.68 x 0.73in 17.84 x 19mm / 0.7 x 0.75in18.84 x 20mm / 0.74 x 0.79in 19.34 x 20.5mm / 0.76 x 0.81in20.34 x 21.5mm / 0.8 x 0.85in 20.84 x 22mm / 0.82 x 0.87in21.84 x 23mm / 0.86 x 0.91in 22.34 x 23.5mm / 0.88 x 0.93in23.34 x 24.5mm / 0.92 x 0.96in 26.34 x 27.5mm / 1.04 x 1.08in34 x 28.5mm / 1.34 x 1.12in 30.34 x 31.5mm / 1.19 x 1.24in27.8 x 29mm / 1.09 x 1.14in 30.84 x 32mm / 1.21 x 1.26in28.34 x 29.5mm / 1.12 x 1.16in 31.34 x 32.5mm / 1.23 x 1.28in28.84 x 30mm / 1.14 x 1.18in 31.84 x 33mm / 1.25 x 1.3in18.34 x 19.5mm / 0.72 x 0.77in 29.34 x 30.5mm / 1.16 x 1.2in19.84 x 21mm / 0.78 x 0.83in 24.84 x 26mm / 0.98 x 1.02in21.34 x 22.5mm / 0.84 x 0.89in 25.34 x 26.5mm / 1 x 1.04in22.84 x 24mm / 0.9 x 0.94in 25.84 x 27mm / 1.02 x 1.06inPackage List:

• 1 x Storage Box 
• 90 x Waterproof O Ring