Description: -Replace stock plastic horizontal fin holders with these strong and stylish CNC aluminum ones. This horizontal fin holder set is designed to work on E-flite Blade 400 to reduce the chance of breaking plastic horizontal fin holders as the plastic version is more prone to breaking in slight crash. The new strong aluminum fin holder holds the horizontal fin by new high quality hex screws. -Blue anodizing version. Includes: -One aluminum fin holder -All hex screws included Requires: -Loctite all screws Weight: N/A Usage: -Blade 400/3D helicopters Instruction: -N/A Features: 100% Precision CNC machined Aluminum Direct replacement of the plastic horizontal fin holder Very light weight and stylish design.