McFarlane Aviation, Inc. FAA-PMA/STC approved PROP GUARD metal propeller anti-abrasion boot
PROP GUARD is a 0.014" thick clear anti-abrasion boot that is bonded to the leading edge of the propeller. As the name suggests, this product can eliminate the destructive impact of water, sand, rock, and airborne abrasives. Virtually all propeller blade failures start as leading edge nicks.