Material - 304 stainless steel. Durable and anti-rust, suitable for outdoor humid environments. Surface and workmanship - Polished surface that is smooth and burr-free, reflecting meticulous workmanship and contributing to a long service life. Structure and performance - Solid construction with a high bearing capacity; not easy to deform under load. Expansion mechanism - Expansion is created by tightening a threaded bolt that draws a tapered cone, expanding a sleeve against the walls of the hole for a secure hold. Key benefits - Corrosion resistant material ensures reliable use in wet or coastal environments. - Smooth, burr-free finish reduces installation damage and promotes durability. - Strong load bearing capacity provides reliable fixation for heavy fixtures. - Simple expansion mechanism enables secure anchoring with a single threaded bolt. Compatible and practical notes - Designed for use with threaded bolts and drilled holes to create a secure expansion anchor. - Suitable for masonry and concrete applications where a robust, durable anchor is required. Use scenarios - Outdoor lighting fixtures, cameras, or signs mounted to concrete or masonry walls in humid or coastal environments. - Wall-mounted handrails, shelves, or brackets on exterior or interior concrete or brick surfaces. - Securing electrical boxes, cabinets, or equipment to concrete floors or walls in industrial or outdoor settings.