This watch case opener will open most waterproof watch cases. Includes four sets of different type of chucks, chucks will work on polygonal, slotted, hole, and grooved case back. Made of high quality steel to help form a tight grip when removing the metal case back from waterproof watches. Get yours today and save the trip to the jewelers. Features: Wrench used open and close waterproof cases Includes 4 sets of clamps Specifications: Opens watch backs from 19mm-37mm Size: 5.5" x 2.03" Color: Chrome 1x Watch Back Opener 1x Clamp with 18 Bits

• Size: 5.5" x 2.03"

Size: 5.5" x 2.03"-