Delrin is a trademark name.

Delrin (Acetal): "Moderate strength; relatively low cost; easy to machine; excellent for general applications where a plastic is desired."

Acetal Delrin® Acetron®: "It is easier to machine than nylon and shows greater stability and moisture resistance than nylon, but is not as wear resistant."

Acetals: " Acetals (DELRIN) suffer from outgassing (odor) problems at elevated temperatures, and are brittle at low temperatures.[/i]

Acetal Limitations: "Acetals (DELRIN) are attacked by ultraviolet radiation, becoming brittle with long term exposure to sun light……."[/i].

All I am saying, is that I personally will not pay $100.00 for a critical component that is made of plastic.

PS: Performance was not the complaint. The fact that the material is plastic was the complaint. Apparently, for those that like "drop-aways," the rest performs well. The question is: How durable will the "plastic" remain and what is the life expectancy....for $100.00?