Original Factory DIN933 - Steel Ceiling Anchors – Sunshow Detail:
It is a kind of expansion bolt. It uses an expansion clip to grip the walls of embedment holes while the nut is tightened at the top. The collar expands and “wedges” itself against the material wall and shank of the bolt, successfully holding the fixture in place.
Product detail pictures:

Related Product Guide:
Bear "Customer initially, High-quality first" in mind, we work closely with our prospects and supply them with efficient and specialist companies for Original Factory DIN933 - Steel Ceiling Anchors – Sunshow, The product will supply to all over the world, such as: Malaysia, Bangladesh, Birmingham, Nowadays our merchandise sell all over the domestic and abroad thanks for the regular and new customers support. We supply high quality product and competitive price, welcome the regular and new customers cooperate with us!

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