Features 14 Sizes: You will receive 150 pcs red steel paper washers in 14 different sizes, effectively meets multiple needs, enough for your daily use Plastic Box Included: Comes with a compact and see-through compartmented plastic storage case, more convenient to store gasket ring.Washers Excellent Quality: Gasket is easy to install, insulates steel screws from other contact surfaces, and has a smooth surface, which can reduce friction between fasteners Premium Material: The gasket ring is a high-quality material with excellent insulation performance, solid structure, high strength and sturdy Features: All washers plumbing is well packed in the plastic box, each set contains many washers, can be used for a long time, easy to find Features: Excellent quality: high quality, sturdy Material: The gasket ring is a high-quality material with excellent insulation performance Multiple sizes: this set effectively meets multiple needs Features: Each set contains many washers, can be used for a long time, easy to find Plastic box included: more convenient to store gasket ring Specification: Material: Red steel paper Size(outer dia.*inner dia.*thickness) & Quantity: 10*5*1mm   10pcs 10*6*1mm   10pcs 10*7*1mm   10pcs 12*8*1mm   10pcs 12*10*1mm   10pcs 14*10*1mm   10pcs 17*10*1mm   10pcs 18*14*1mm   10pcs 20*14*1mm   10pcs 20*15*1mm   10pcs 22*16*1mm   10pcs 24*16*1mm   10pcs 24*18*1mm   10pcs 20*12*1mm   20pcs Weight: 113g / 4oz (approx.) Package list: 1 box * Washers Package List