FEC Bennewart Flex Tester consists of a drive unit comprising of an electric motor with pulleys and belts and link mechanism to give an oscillating movement to one of the two grips holding the two ends of test specimen, the other grip being fixed. 2. A cutting die for preparation of test specimen from sheet and slitting punch with jig for making initial crack are available as optional accessories. The Presto Bennewart Flex tester has been strictly manufactured as per the following standards: DIN 53543- 1979: Testing of Semi Rigid Polyurethane (PUR) Integral Cellular Material for Soles and Parts of Shoes. 3. The equipment is built on a rigid metallic base plate and finished in Autumn Gray & Blue combination painting and bright chrome / zinc plating to give it a corrosion resistant finish. 4. The Instrument comes complete with Instruction Manual; Electrical Wiring Diagram & Calibration Certificate traceable to NABL approved Labs