✔Sizes: M6 x 12/16/20/25/30mm Metric Flange Bolts Screws pair with serrated lock nuts and washers.
✔Class 10.9 Steel are considered hardened, providing a high strength, high tensile fastening solution, coated with zinc black provides these m6 flanged head bolts better rust resistance, won't strip easily.
√ 3X Rust Protection German Coating Tech- VIGRUE black M6 1.0 bolt kit incorporate German coating anti-rust technology, offer a threefold increase in rust protection compared to other brand regular screws. 90 days worry free WARRANTY.