40Pcs M5x16mm Yellow Zinc Plated 4.8 Grade phillips Drive Serrated Flange Hex Head Bolt Double Rod Cylinders Rhtchet wrench: 1/4 inch square

Rhtchet wrench: 1/4 inch square drive and H4 hex head

Super elastic torque can absorb vibration

Can fix and decorate mirrors greatly

friction resistance

40Pcs M5x16mm Yellow Zinc Plated 4.8 Grade phillips Drive Serrated Flange Hex Head Bolt Double Rod Cylinders Rhtchet wrench: 1/4 inch squareIron construction with yellow zinc plated for good corrosion resistance. Flange bolts are widely applied in many assembled occasions. Generally use for fastening two parts with nuts. Flange hex head has the same characteristic as external hex with washer. Flange provides a bearing surface for load distribution. Features hex head with serrated flange, metric thread, external hex or phillips drive for more flexible working in different situation.