Description: 【Premium Material】: The Router Milling Groove Bracket is made from aluminum alloy, ensuring wear resistance, durability, and long term use 【Versatile】: This multifunctional tool is designed for circular milling, slotting, and trimming tasks. It features a detachable 180mm diameter aluminum alloy base that can be extended to accommodate various large milling machines 【Adjustable Radius Range】: The tool offers a wide range of circular milling capabilities with a minimum radius of 120mm and a maximum radius of 650mm. Its multihole positioning ensures precise and stable operations for different project needs 【Smooth and Stable Operation】: Engineered for smooth performance without jamming, this tool allows easy positioning for straight milling within the range of 120-400mm, ensuring precise slotting and cutting 【Wide Application】: The Router Circle Cutting Jig is mainly used to work with a wood trimmer, widely suitable for wooden boards, solid wood boards, PP boards, acrylic boards, etc. Specification: Material: Aluminum Alloy Size Chart: Base: 18cmx18cmx0.5cm/7.09inchx7.09inchx0.20inch Scale Bar: 36cmx3cmx1.25cm/14.17inchx1.18inchx0.49inch Extension Bar: 24cmx3cmx1.25cm/9.45inchx1.18inchx0.49inch Package Includes: 1 Set Router Milling Groove Bracket Note: Please allow slightly errors 1-2cm/0.39-0.79inch differences due to manual measurement.