Features: Tight tolerance and mismatched performance. The parts have good rigidity, long service life and lower the cost of tools. Features high grip strength, impact resistance, fast cutting and processing It is convenient for the user to clamp and replace, and only a wrench is needed to complete the replacement of the blade and blade pad. Practical and diverse processing environment, even in very dirty environment such as cast iron, also has very good characteristics. Specification: Model: SER2020K16 Square handle d:20 x 20 mm Shaft: Approx.125 mm/4.92in Wrench: T 15 Insert material: steel Accept plugins: 16ER AG60 (10pcs) Suitable for: semi - finishing, finishing Package list: 1 x SER2020K16 Holder 1 x Wrench 10 x 16ER AG60 Blade Note: 1. Due to manual measure, please allow 1 ~ 3 mm error, thanks. 2. The color of the box and part of the product with rubber is random.