Watch case opener:Color: blue Size: 70 mm x 28 mm x 11mmAdjust range: 12mm – 57mmFit for: water resistant casesWatch case holder:Color: yellowSize: 70 mm x 46 mm x 36mm Adjust range: up to 42 mmWatch case opening knife: Color: yellowSize: 11.8 mm x 1.8 mm x 0.8 mm Watch case opening pry: Color: yellowSize: 8.5 mm x 4.5 mm x 2 mmHow to use watch holder: Step 1: Unscrew the four white posts of the watch case holder (the yellow one), turn the silver knob and make it fit snugly around the watch face plate. Step 2: Put the back of your watch into the watch case holder. Open the pins of the holder wider than the size of the watch case, put the watch in the case and tighten the holder until it holds the watch case securely. How to use case opener: Note: This opener is suitable for screw down watch back case, cannot be utilized in the pressure type watch case Step1: Adjustable wrench for waterproof watch case backs with pointed pins.Easy to use by adjust centre wheel to open pins to diameter required. Step2: When the tips are in securely in place in the watch case back notches, you can begin to unscrew the watch back. Grip the watch holder to keep it from moving and begin turning the case wrench counter clockwise to open the watch casePackage:1 * Watch case opener1 * Watch case holder1 * Watch case opening knife1 * Watch case opening pry1 * Watch wipes cloth