The oxidized steel support screw features two expansion zones.

Substrates: Requires durable concrete of class B15 or higher.

Advantages - Features:

• Most sizes are available with two expansion zones.
• Complete range of diameters and lengths.
• Conical shape in the expansion section facilitates the wedging of the screw into the hole.
• Flat opening at the screw tip allows manual adjustment.
• Especially useful for supporting very thick elements.

Material: Electro-galvanized steel with a corrosion-resistant coating thickness of at least 5µm.