Portable: : Lightweight cast aluminum base plate can be easily maneuvered . Drill Centered Holes: : Simply twist the base for immediate centering on the edge of a board . Angle-Measuring Scale: : Double guide bars are attached to the metal base and can be shifted back-and-forth to set your preferred angle up to 45 . Guide Bars: : Dual springs control the rate of penetration and return Especially useful for repetitive drilling . Adjustable Depth Stop: : Thumb screw quickly releases and sets depth . V-Groove Base: : Secures a wide variety of round and odd-shaped work-pieces up to 3 in. diameter . 3/8 in. Mounted Drill Chuck & Key : : Allows the guide to be used with all 3/8 and 1/2 in. portable drills Our products are made with the highest quality materials and are designed to provide you with the best possible user experience. We strive to ship out all orders within three days of purchase, and the estimated delivery time is 8-15 days. When shopping, please pay attention to the size and dimensions of the product to ensure that it meets your needs. In the title and , we have provided detailed information about the product, including its features and specifications. We want you to be completely satisfied with your purchase, so if you have any questions or concerns, please don't hesitate to contact us. We are here to help and will do our best to assist you. Thank you for choosing our product. We hope you enjoy it