[IN THE BOX]: 1 each Pro-Graad Shaft Adapter for Core Drill Hole Saw, 1/2” Triangle Hex Shank to 1-1/4"-7 Male Threads [VERSATILE COMPATIBILITY]: Easily converts your 1/2” power drills to 1-1/4"-7 male threads, allowing the use of large 1-1/4”-7 threaded diamond hole saws and core drill bits. [DURABLE ALLOY STEEL]: Crafted from high-quality alloy steel, this adapter offers exceptional durability and reliability, making it ideal for heavy-duty applications and ensuring long-lasting performance. [PROFESSIONAL GRADE]: Designed for both professionals and DIY enthusiasts, this solid steel adapter provides a secure fit and stable operation, allowing you to complete your drilling tasks with precision and confidence. [PRODUCT GUARANTEE]: All Pro-Graad products are made with quality materials, which exceed ANSI and EU standards. We are driven to deliver high-quality, high-performing products to the end user. This is why we stand behind our 100% Product Guarantee. If you are not satisfied with the product, simply return your purchase within 30 days, and we will replace or refund your order. Pro-Graad is an American Company with US Based Customer Support. The Pro-Graad Shaft Adapter is a must-have tool for anyone working with large 1-1/4”-7 threaded diamond hole saws and core drill bits. This versatile adapter allows you to convert your ½” chuck power drill to 1-1/4"-7 male threads, making it possible to use large 1-1/4”-7 threaded diamond hole saws and core drill bits. Constructed from high-quality alloy steel, this adapter is built for durability and reliability, ensuring long-lasting performance even in the most demanding applications. Designed for professional use, the Pro-Graad Shaft Adapter ensures a secure fit and stable operation, whether you're a DIY enthusiast or a seasoned professional. Its solid construction and reliable performance make it an essential addition to your tool kit, allowing you to tackle a wide range of drilling tasks with confidence and ease.