Features:
1. Made of high quality rubber material, which is durable for long-term use.
2. Great for repairing watches.
3. Making your watch water resistant.
4. Storage by categories enables you find the size easily and quickly.
5. Compact and light weight design for easy to store and carry.

Specification:
Material: Rubber
Color: Black
Rubber Shape: Round
12 Size (Outer Diameter x Inner Diameter):
1.4mm / 0.055inch (0.6 x 0.4)
1.45mm / 0.057inch (0.65 x 0.4)
1.5mm / 0.059inch (0.5 x 0.5)
1.5mm / 0.059inch (0.6 x 0.45)
1.6mm / 0.063inch (0.6 x 0.5)
1.6mm / 0.063inch (0.6 x 0.7)
1.7mm / 0.067inch (0.7 x 0.7)
1.8mm / 0.071inch (0.8 x 0.5)
1.9mm / 0.075inch (0.9 x 0.6)
2.0mm / 0.079inch (1.0 x 0.5)
2.4mm / 0.094inch (1.4 x 0.5)
2.8mm / 0.11inch (1.8 x 0.5)
Weight: 29g

Package Include:
1 x Box of Watch Crown O-Rings