Rock Strength (up to): Hadfield - 400 Mpa, - 500 Mpa. Reversable Jaw Dies: Yes. Jaw Sizes (In): Hadfield - 48x12, 48x18, 80x60. - 15x24, 20x32, 30x42, 42x48, 50x60. Features: Patented hydraulic beam locking system, Excellent nip angle, Fabricated main frame and swing jaw, Reversible jaw dies for maximum wear, Relief / adjustment.