Polyurethane Material - Propeller and Shock Absorber - Shore 22 Technical Specifications: • Color: Yellow • Dimensions: 750 x 500 mm • Thicknesses: 2 mm / 4 mm • Material: Polyurethane Foam • Shore A: 22 • Density: 450kg/m3 • Propeller • Shock Absorbing All your materials may be cut in half without your consent for logistical reasons. Thank you for your understanding. The material sheets come from a block that needs to be cut to obtain them. The slicing generates a "beak" at the entry and a "leak" at the exit. This only affects a small part of the sheet, and the rest can be used. Here is a schematic diagram: A quality control is carried out on each sheet upstream by our teams so that these thickness differences do not exceed a certain threshold. Therefore, the presence of these irregularities being a consequence of the production process cannot in any case be a reason for complaint or return.