What is "vari-prop"

Vari-Prop, founded in 2004 by Larry Morgan, is an American manufacturer of composite propellers for homebuilt and light-sport aircraft. The company headquarters was originally located in Cottonwood, California and is now in Beaverton, Oregon.

The company's line of propellers has been under development since 1988 and consists of variable-pitch, ground-adjustable and constant-speed propellers.