It consists of hex bolt, washer, nut and slotted expansion sleeve. Tightening the nut pulls the bolt and expands the metal sleeve, forming friction locking inside concrete, brick and masonry. Manufactured from high-quality carbon steel or stainless steel 304. Surface treatments include zinc plating, hot-dip galvanizing. Complete metric specifications from M6 to M24. Suitable for medium-load fixing: equipment brackets, pipeline supports, door & window frames, electrical installation.