This is a clone of a Jaxa® style waterproof caseback wrench. Three point contact leverage for recess cut screw-backs. Full two-axis analog adjustment range 16-48mm. Massive handle and head provide torque leverage without slipping. Four shapes of steel contact pins. Weight:370g. Plastic storage base. Made in China.
If you have never used this type wrench practice on a scrap caseback to easily learn the adjustment and technique of pressing and torqueing without slipping. Once you get the feel you will never scratch a notched caseback. I find this to be the most usefull of the many styles of caseback wrenches.
