Type P (aluminium, prisms): Clamping of workpieces in a variety of shapes. Type N (aluminium): Clamping of coarse to medium-fine workpieces. The 90° milling in the upper part of the jaws allows for easy and horizontal clamping of flat material. The high accuracy of the vice is retained despite the protective jaws. The incorporated prisms in different sizes hold the workpieces securely for precise work. Type P material Maintains the high accuracy of the vice. Heuer protective jaws set. Soft Jaws for HWR 77mm Solid Grip Vise - CNC Jaws Easily compare heuer vice set, 4 pieces (protective jaws, suitable for vice 120 mm, type g/p/n/f) 115105 from over 5,000 stores including Amazon and eBay on Integrated special magnets hold the protective jaws securely on the vice. Magnetism does not penetrate through to the clamping surfaces - no attracting chips, nor magnetising of the workpieces. Type F (fibre): Clamping of workpieces with fine-milled or planed and polished surfaces. Heuer Vise Jaw Set Heuer Brockhaus Accessories 115105 Protective Jaws Set For Vise Type Ngfp 120 Mm Right-angle Plane-parallel Protective Jaws Original Brockhaus_Heuer Quality