For professional use in construction and industrial applications. There are 3 jaws available giving a better grip and release of the nail. The lazy tongue design gives a large riveting force and is suitable for use in areas difficult to access. The long nose is good for access, with 5 nose bushes for rivet diameters of 3.2, 4.0, 4.8, 6.0 and 6.4mm. (Repair kits and spare parts set are available on request).