How to find out the diameter of my handle?
Step 1. Prepare strip of paper.
Step 2. Wrap it around the handle.
Step 3. Use pen or pencil to mark the spot where the paper wrapped around the section meets.
Step 4. Measure section to the marked spot to find out the Circumference.
19mm Diameter Handle = 59.66mm Circumference
20mm Diameter Handle = 62.8mm Circumference
21mm Diameter Handle = 65.94mm Circumference
22mm Diameter Handle = 69.08mm Circumference
Use vernier caliper to measure handle diameter.