It is designed specifically for screwing two thicker parts together. The unique design let you tight or loose without tools conveniently.

Highlights:
Compact and stylish design;
18mm length screws two thicker parts tightly;
Unique design let it be operated conveniently;

Includes:
1 x 1/4"-20 screw       

Specification:
Material: Brass
Net Weight: 21g
Dimension: 22x22x28mm