Instructions for Replacing a Leaky Bathroom Faucet:

Tools Needed:
- Screwdriver (adjustable or flathead)
- Wrench (plumber's wrench)
- Replacement faucet (same make and model as the old one)
- Replacement cartridge or valve
- Disposable gloves
- Towels or rags

Step-by-Step Process:

1. Shut Off Water Supply:
a. Locate the shut-off valve under the sink and turn it clockwise to shut off the water supply to the faucet.

2. Remove the Handle:
a. Use a screwdriver to remove the screw holding the handle in place.
b. Once the screw is removed, gently pull the handle off the faucet.

3. Remove the Nut and O-Ring:
a. Use a wrench to loosen and remove the nut that holds the handle in place.
b. Take out the old O-ring and inspect it for damage or wear.

4. Remove the Cartridge or Valve:
a. Depending on the type of faucet, either the cartridge or valve will need to be removed.