Pitched Blade Propellor, For Use With A162, A712, A713, A722, A723, A733, A742, A743, A753, Shaft Dia. 5/16 In., Material Stainless Steel, Blade Dia. 2 In., Includes Set Screws, 5/16 Inch Bore, Electropolished, Manufacturers Warranty Length 2 yr.