Carbon steel with color‑zinc plating; Sharp tapered barbs evenly distributed on sleeve outer wall. Barbs bite into base material for firm locking when expansion screw rod is tightened.
Soft wall substrates such as hollow bricks, perforated bricks and aerated concrete blocks; anchoring for supports, guardrails, doors and windows components.
M6‑M12; Length:50‑150mm; Anti‑slip barbs for enhanced locking; Color‑zinc plated for corrosion resistance.
