Steel Watch Tool Key Wrench to Open Max.57mm Big Watch Back Case Jaxa Type

Features:
Storage case included.
Easily adjustable for various case dimensions
Designed for opening and fitting screw cases on waterproof watches

Specifications:
Material: Steel
Max Opening: 57mm
12 Clamps: Round x 3 / Flat x 3 / Square x 3 / Toothed x 3

What's included:
1x Watch case opener with 12 bits
1x Storage box