Upgrade your Ariens mower's performance with the Ariens 06603400 25 x 1. 25 x 25 SAE Square Key. This durable and reliable part is designed specifically for Ariens models and is made to exact specifications for a perfect fit. Featuring a sturdy construction and easy installation process, this square key will ensure your mower's engine runs smoothly and efficiently. Say goodbye to worries about compatibility or subpar performance with this genuine Ariens part. Upgrade your mowing experience with the Ariens 06603400 and enjoy a hassle-free maintenance routine. Trust in the brand that has been a leader in lawn care for over 80 years. Don't settle for less, choose Ariens.