Huashan Replacement Brass Ceramic Disc Stem Cartridge Faucet Valve Quarter Turn 1/2" X 53mm x 12mm spline length 20 teeth(PAIR Hot & Cold)

Dimensions: Spline diameter: 7.6mm; Number of teeth on spline: 20; Base diameter: 18mm

Q1: Which kind of cartridge is suitable for my faucet?
There is no fixed cartridge suitable for any faucet. You'd better take apart the original cartridge to compare the size, then replace the original cartridge if the same size.

Q2: How to choose the correct cartridge?
Please check the dimensions carefully before ordering to ensure compatibility with your model.
a.make sure it is 20 teeth on spline(top of stem) for handle.
b.compare the diameter size of the thread head to check it is 7.6mm or not.
c. make sure it is with threaded collar or without threaded collar.
d.make sure it is thread size G 1/2" BSP.
e.compare the height of the cartridge.
f.make sure the direction of the opening, it is clockwise or anti-clockwise.

Q3: How to remove the old cartridge and install the replacement?
Step 1: Lever the lid of the faucet handle with a knife. 
Step 2: loosen the screw with a screwdriver .
Step 3: remove the screw. 
Step 4: remove the faucet handle. 
Step 5: screw off the old cartridge with a wrench. 
Step 6: remove the old faucet valve and install the replacement.