This impact tester has gained wide acceptance in testing the impact resistance of many types of coatings from paints to varnishes to tough plated, plastic or laminated coatings. It is also widely used to establish quality control standards for resistance to impact surface damage and penetration of many construction materials including plastics, resins, fiberglass, sheet metals, and plywood. Two models are available: English Model - Two and four pound weights included - Maximum allowable force of 80 and 160 inch-lbs - Round nose punch, 0.625 in (1.59 cm) diameter - 40 inch guide tube Metric Model - One and two kilogram weights included - Maximum allowable force of 100 and 200 kg-cm - Round nose punch, 0.625 in (1.59 cm) diameter - 100 cm guide tube