Amtech S5965 6 Piece 8mm Closed Hook Bolts

ManoMano

For secure and reliable fixing of items and fixtures to masonry, concrete, brick, block etc.. Requires 13mm spanner to tighten hex. nut. Internal eye diameter: 20mm. For facing bricks/ concrete/ 7N concrete block drill 14mm hole for the expansive bolt.. (Low density aircrete block or mortar may require a 13mm hole) NOTE: These expansion bolts are not suitable for works requiring Building Control or Local Authority sign-off such as safety rails, balustrades, load-bearing joists/ wall plates etc

Amazon

HEAVY DUTY: These heavy duty 8mm closed hook bolts have a zinc passivated finish for maximum protection VERSATILE: They are ideal for secure and reliable fixing of items and fixtures concrete, stone and brickwork 13mm SPANNER REQUIRED: A 14mm clearance hole is needed for the expansive bolt and the M8 thread requires a 13mm spanner to tighten the expansion nut, Manufacturer: DK Tools

Zoro Tools

HEAVY DUTY: These heavy duty 8mm closed hook bolts have a zinc passivated finish for maximum protection. VERSATILE: They are ideal for secure and reliable fixing of items and fixtures concrete, stone and brickwork. 13mm SPANNER REQUIRED: A 14mm clearance hole is needed for the expansive bolt and the M8 thread requires a 13mm spanner to tighten the expansion nut.