8-piece double-ended wrench set in foam insert (175x350x45 mm) Double T-profile significantly increases the wrench's bending resistance Extremely low wear Oil-hardened to prevent stress and deformation More metal in the most stressed areas to reduce the risk of breakage Set includes 6x7, 8x9, 10x11, 12x13, 14x15, 16x17, 18x21, 19x22 mm wrenches