The Model 266 S cylindrical mandrel bending tester is a compact and robust lever-based device made of painted steel. It comes with 14 easily replaceable cylindrical (in the low diameters 2, 3 and 4 mm reinforced) VA mandrels (diameter: 2 – 32 mm). The three swivel pressure rollers (which are parallel to the cylinder axis) are made of rigid PVC. This device is delivered in a plastic case. The Model 312 conical mandrel bending tester is a compact and robust painted-steel tabletop unit. The conical mandrel and the counter-roller, which can be swivelled parallel to the cone surface, are made of stainless steel. The clamping device equipped with an eccentric lever enables the samples to be swapped quickly and easily.