High-quality steel plate, light sheet metal flow due to the new body shape (plate body), easily infinitely adjustable large holding, so that precise shearing after cracking and clean cutting quality, reliable accident protection, especially with safety bolt, high-quality shear tool a, high-quality fabricated, hardened and ground, ensuring long service life and long service life, especially suitable for assembly work for locksmiths, installers, training workshops, etc. Improved version for clearer understanding and better search visibility. Suitable for users seeking detailed and reliable product information.