Material: steel, galvanized and passivated, installation without drilling, without spreading tool, dowel does not rotate when screwing in, flat head, with serrated tip for easier hammering in, barbs for better fixation, with central internal thread, dismantling with little damage to the wall, PGKD-M Medium Duty for medium-heavy applications: tensile load: up to 15 kg, compressive load: up to 30 kg, for plasterboard 9-13 mm, PGKD-H Heavy Duty for heavy applications: tensile load: up to 25 kg, compressive load: up to 70 kg, for plasterboard from 13 mm