For all variable uses requiring sensivity and force The variable handle position permits a sensible combination of handle and tommy bar With hollow-section bar and integral clamping arm In cold-drawn profile-section steel, hot-forged to shape and with optimum heat treatment guarantees torsion-free transference of the clamping force With forged clamping arm - fitted to slide perfectly Movable pressure plate with protective cap Deep trapezoidal thread for optimum transfer of force In special steel, hardened, bright zinc-plated - for good protection against corrosion and non-dirtying surface With beech wood handle