General description The 270pcs 304 Stainless Steel Internal Tooth Star Lock Washers set includes washers in 7 different sizes: M3, M4, M5, M6, M8, M10, and M12. Made from high-quality 304 stainless steel, these washers are resistant to corrosion, rust, and wear, ensuring durability and reliability. Their unique eight-pointed star shape with internal teeth provides a strong bite force, preventing loosening and ensuring a stable lock. Ideal for various applications, these washers are perfect for DIY projects, repairs, and construction tasks. Technical specifications Material: 304 stainless steel Shape: Eight-pointed star with internal teeth Color: Silver Quantity: 270 pieces Sizes: M3, M4, M5, M6, M8, M10, M12 Weight: approximately 124 g Package includes: M3 x 50 pieces, M4 x 50 pieces, M5 x 50 pieces, M6 x 40 pieces, M8 x 40 pieces, M10 x 20 pieces, M12 x 20 pieces Usage These washers are easy to use; simply place them between the bolt or nut and the surface to be fastened to increase