High-performance A3 Carbon Steel cavity fixings. Ideal for fixing heavy objects securely on soft-faced partition boards. All metal cavity fixing, fitted with expanding arms that spread out behind the board providing a large load-bearing area. Anti-rotation teeth ensure firm anchorage, a bonded washer with integral thread for increased reliability. All metal, for heat resistant applications. Box Contents: 28x M4x 32 22x M4x 38 20x M4x 46 20x M5x 37 10x M5x 52 10x M5x 65 15x M6x 37 8x M6x 52 8x M6x 65