Specification: Material: Stainless Steel + Nylon Color: Black+Red Size: 1.7 x 1.6 x 1.3 Inches Weight: 0.08kg Package Include: 1 x red M8 double stud terminal + 1 x black M8 double stud terminal -High quality nylon to increase the stability and strength of the product. -Stainless steel material for extended use. They can work well in humid environments.