Features 1、100% brand new and high quality. 2、Made of premium iron material, these screws are sturdy and durable. 3、The surface of screw is plated with zinc for better performance. 4、There are many screws in different sizes that you can use for different purposes. 5、All screws are well packed in a plastic box for convenient carry and storage. Specification Features: 100% brand new and high quality. Made of premium iron material, these screws are sturdy and durable. The surface of screw is plated with zinc for better performance. There are many screws in different sizes that you can use for different purposes. All screws are well packed in a plastic box for convenient carry and storage. Specification: Material: Iron Surface finishing: Zinc plating Size(thread diameter*overall length, mm) & quantity: 4*16 20pcs 4*20 20pcs 4*25 20pcs 4*30 20pcs 4*35 20pcs 4*40 10pcs Weight: 222g / 7.8oz (approx.) Package list: 1 set * Dowel Screws Package List