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 processingIt 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: SER2020K16Square handle d:20 x 20 mmShaft: Approx.125 mm/4.92inWrench: T 15Insert material: steelAccept plugins: 16ER AG60 (10pcs)Suitable for: semi - finishing, finishingPackage list:1 x SER2020K16 Holder1 x Wrench10 x 16ER AG60 BladeNote: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..