Length: 300 mm/11.8 Inches. Width: 4.6 mm/0.18 Inches. Thickness: 0.25mm/0.01 Inches. 20 pcs metal zip ties packed in sealed bags. High tensile strength for dependability and safety on heavy duty applications like Exhaust Wrapping, Fence, Canopy reinforce, outdoor and industrial working. Rounded edges and a smooth surface making these cable ties easy on the hands, fully enclosed head does not allow dirt or grit to interfere with locking mechanism. This heavy duty zip ties features Self locking, ball bearing mechanism, which assures 200 LBS min tensile strength and easy insertion when securing hoses, cables, pipes and more. 304 grade fire proof stainless steel metal zip ties offer better protection to your belongs compared to ordinary plastic ties, providing protection when used in corrosive environments and extreme temperature.