Features 1、Made of stainless steel material, durable to use 2、Equipped with a plastic box, you can classify screws in an organized manner, more convenient to carry and take out 3、Use this fastener make the mechanical parts firmly in place 4、Different specification screws can be used for different purpose 5、Used widely in the home and office appliance, furniture and other machinery industry Specification Features: Made of stainless steel material, durable to use. Equipped with a plastic box, you can classify screws in an organized manner, more convenient to carry and take out. Use this fastener make the mechanical parts firmly in place. Different specification screws can be used for different purpose. Used widely in the home and office appliance, furniture and other machinery industry. Specification: Material: Stainless steel Thread size: M3, M4, M5, M6, M8, M10, M12 Weight: 425g Content: M3 55PCS M4 35PCS M5 30PCS M6 25PCS M8 15PCS M10 10PCS M12 5PCS Package Included: 1 x 175pcs nuts with box Package List