Features 1、Easy Drilling: No need for nuts, the self drilling screw enables easy drilling into the material, efficient and labour saving. 2、Various Sizes: There are 108pcs round head cross screw in 6 different sizes, and the firm fixing will satisfy your work needs. 3、Practical Use: Allows for wide application on machinery, sorting instruments, meters, electronic products, appliances and so on. 4、Good Material: Using rustproof 410 stainless steel material with high hardness, also very durable with wearing and long using. 5、Simple Carrying: The storage box can hold all the lightweight and compact M4.8 screws in an orderly to simplify the carrying. Specification Item Type: Self Drilling Screw Material: 410 Stainless Steel Package List 15Pcs M4.8 x 16 Self Drilling Screw 15Pcs M4.8 x 32 Self Drilling Screw 15Pcs M4.8 x 38 Self Drilling Screw 25Pcs M4.8 x 19 Self Drilling Screw 19Pcs M4.8 x 13 Self Drilling Screw 19Pcs M4.8 x 25 Self Drilling Screw 1 x Storage Box