This is an APC 19x12WE (Wide Thin) Electric Propeller.
FEATURES: Composite construction, Gray in color
Thin propeller designed ONLY for Electric use
INCLUDES: One APC 19x12WE Electric propeller with one each .128" (3.2mm), .158"
(4mm), .197" (5mm) .237" (6mm) and .313" (8mm) locating rings for a
more precise fit
SPECS: Hole diameter: 1/4"
Propeller diameter: 19"
Propeller pitch 12
COMMENTS: Do not use with nitro or gasoline powered aircraft.