The NIP ALIGN AGNK10461A DS410M Servo Gear Set HSP41034T is a must-have accessory for your R/C model helicopter. Made by Align and compatible with Align brands, this servo gear set is of high quality and durable construction. Designed for electric fuel type, this servo gear set is ideal for 17 years and up age level. The package includes a set of gears that are easy to install and will improve the performance of your model helicopter. Don't miss out on this essential upgrade for your R/C model helicopter.