Description:_x000D_These screws are made of high quality carbon steel, they are very strong and durable to use. Zinc plated countersunk bolts is anti-corrosion,rustless,non-pollution and high-hardness. It is widely used in industrial._x000D__x000D_Features:_x000D_1. Made of high quality carbon steel, very strong and durable to use, environment-friendly, no pollution, high hardness._x000D_2. This set is organized by size in a transparent storage case for quick access and protection._x000D_3. There are 8 different lengths in one set to meet your various needs._x000D_4. The moderate and clear cross heads can make your working more easily._x000D_5. Ideal for use by a variety of workers and repairmen from plumbers to assemblymen both professional and amateur, even DIYers can opt to use it. _x000D__x000D_Specifications:_x000D_Material: Carbon Steel_x000D_Color: Black_x000D_Weight: Approx. 139g_x000D_M2 x 4 M2 x 6 M2 x 8 M2 x 12 _x000D_100pcs 100pcs 100pcs 100pcs _x000D_M2 x 5 M2 x 7 M2 x 10 M2 x 16 _x000D_100pcs 100pcs 100pcs 100pcs _x000D__x000D_Package Include:_x000D_1 Set x Cross Screws (include 800pcs) 1Made of high quality carbon steel, very strong and durable to use, environment-friendly, no pollution, high hardness 2This set is organized by size in a transparent storage case for quick access and protection 3There are 8 different lengths in one set to meet your various needs 4The moderate and clear cross heads can make your working more easily 5Ideal for use by a variety of workers and repairmen from plumbers to assemblymen both professional and amateur, even DIYers can opt to use it