The Pro-Graad 301-699 Replacement Die Grinder Collet Nut is a high-quality, durable replacement part designed to maintain the performance and longevity of your die grinder. It is specifically engineered for compatibility with Ingersoll Rand Series 301, 302, 307, 308, 3101, 5102, 5108, WorkPro, Dewalt and other air/pneumatic die grinders featuring a 1" tall M16*1 threaded collet clamping nut cap. Manufactured to exceed OEM standards, this collet nut ensures a secure, even clamp on the collet, which is essential for properly holding shanks in place during operation. This secure fit helps prevent slippage, ensuring optimal performance and safety while using your die grinder. Constructed from high-quality stainless steel, the Pro-Graad collet nut exceeds OEM specifications, offering enhanced durability and longevity. This means you can rely on it to withstand the demands of heavy use, making it a cost-effective solution for replacing worn or damaged collet nuts. As a direct replacement part, the Pro-Graad 301-699 is easy to install, allowing you to quickly restore your die grinder to its full operational capability. With this premium replacement collet nut, you can ensure that your die grinder continues to perform efficiently and reliably.