kaileyouxiangongsi Hollow-Wall Anchors Drywall Anchor kit with Screws

kaileyouxiangongsi Hollow-Wall Anchors Drywall Anchor Kit with Screws Self-Drilling Hollow Wall Anchor Grey 65lbs (One Size Anchor 50pcs+Screw 50pcs)

• steel Quantity : 50 plastic anchor.
• 50pcs screw (total 100pcs) Product Name : Plastic expansion plug Size : 1.

Structure? When tightening the screw the gap in the ribbed anchor is expanded on two opposite sides to increase the fixing force.