Material: CRV steel constructio
Fits most screw back cases.Opens watch backs from 17mm-37mm
Blue Package Case Contains: 6 sets of different 18 Pins,1 x Watch Case Open Wrench
It has a knurled handle for added grip and an adjustable thumb wheel.Holds watch in 3 positions
We are a professional factory of all kinds of hand tools,and promise the quality of our products.