Anti slip rolling design: The rolling surfaces enhances friction, effectively slipping, making operations more stable and safe, and improving comfort during use Multiple inner hole diameter options: up to 7 inner hole diameters are available ( 4mm, 5mm, 6mm, 7mm, 8mm, 9mm, 10mm) to flexibly meet the drilling needs of various woodworking and aluminum profile positioning drilling: The design solves the problems of drill bit offset and shaking, ensuring the accuracy of drilling and greatly improving work efficiency, allowing users to save time and effort Widely applicable: It can be used in various scenarios such as woodworking punching, layer board punching, and aluminum profile punching, and is highly practical, making it ideal for woodworking enthusiasts and professionals Using high-strength stainless steel, it has good resistance and wear resistance, ensuring excellent even after long-term use, Manufacturer: JunsenF