Our one-of-a-kind composite Windecker prop was loaned to Gerald Redman, an FAA inspector in Northern California in 1983 just before his untimely death. We do not know who he gave it to for analysis and am trying to locate it. It is a ground-adjustable prop, white in color, made of kevlar, approx. 76 inches in length with an aluminum hub. Danny Mortensen, agsdanny@aol.com or 859-384-7821.