IMPORTANT: Read this before ordering coupler valves or coupler keys…
A common mistake is ordering the wrong size. Guessing wrong will delay your project and incur a restocking fee.
Measuring Quick Coupler Keys: You want to measure the outer diameter of the base of the key — the portion that is inserted into the quick coupler valve.
Measuring Quick Coupler Valves: Because the valve will receive the key, you need to measure the inner diameter where the key is to be inserted.