Features: Precise engineered with a 5mm floating and overload protective, this ER20 thread cutting chucks ensures accurate tap alignment, crafted from HRC60 hardened alloy for 30% longer wear resistance than standard tool holders. The auto centering drill chucks features tool less blade replacement in under 10 seconds and vibrations dampening technology, for manual tapping machines for metal/plastic workpieces. Ideal for professional machinists, automotive technicians, and production line operators requiring rapid tool changes during high precise manufacturing or DIYer metalworking projects. Optimized for automotive part fabrication, electronic device assembly, and industrial machinery maintenance where surfaces irregularities demand adaptive thread cutting solution. Its ER25 compatible design integrates seamlessly with Gewindeschneidmaschine systems, delivering workshop grade durability and error compensation for flawlessly screw thread creation on uneven surfaces. Specifications: Component: Alloy Size: Approx.15.5x2.8cm/6.1x1.1inch Size: Approx.15.5x3.4cm/6.1x1.33inch Size: Approx.13x2.8cm/5.11x1.1inch Size: Approx.13x4.2cm/5.11x1.65inch Type: SL16-VER16/SL20-VER20/SL20-VER25/SL25-VER20/SL25-VER25/SL32-VER32 Package Includes: 1pcs Floating Tapping Chucks note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you donot mind befores you order. 2.Due to the differences between different monitors, the picture may not reflect the actual color. Thanks for your understandings.