The material is made of high quality 304 stainless steel.
They are known for their reliable rigidity and corrosion resistance. 
This type of steel is able to withstand drastic weather and temperature changes including placement Including extremely wet areas. 
Widely used in various precision machinery industries, classified instruments, meters, electronic products, household appliances, communication products, locks, lamps, toys and so on.
Specification: 
Thread Diameter 8 mm 
Head Diameter 13 mm 
Head Height 8 mm 
Screw Length 90 mm 
Allen Hex Drive 6 mm 
High Quality Material 304 Stainless Steel
Package Included:
10 PCS Socket Head Cap Bolts/Screws (M8 x 90mm)
Warranty:
Whenever you need us, please contact us by email or Q&A. We will provide you with professional services and reply to you as soon as possible. If you are not satisfied with the product, you can get a full refund, and you can buy it with confidence.