The Left Blade Controller is a specialized part designed for the RM300 30" Riding Mower, specifically compatible with Ryobi brand mowers. This controller is manufactured in Vietnam by Ryobi / Homelite, ensuring quality and reliability. With a pack containing one controller, this product is ideal for those in need of a replacement part for their riding mower. Additionally, it comes with free shipping within the US, making it convenient and efficient for customers to receive their needed part.