Features 1、Made of high quality material, high strength and hardness, durable in use. 2、Various specifications in one set to meet your various needs. 3、Precision thread design offers strong engagement for maximum holding power. 4、Equipped with a storage case for quick access and protection. 5、Used widely in the home and office appliance, wood furniture, repair and inventions. Specification Features: Made of high quality material, high strength and hardness, durable in use. Various specifications in one set to meet your various needs. Precision thread design offers strong engagement for maximum holding power. Equipped with a storage case for quick access and protection. Used widely in the home and office appliance, wood furniture, repair and inventions. Specification: Material: Zinc-iron Quantity: 200pcs Package List: 30 x 4.2 * 19 Self Tapping Screws 30 x 4.2 * 25 Self Tapping Screws 30 x 4.2 * 13 Self Tapping Screws 30 x 4.2 * 16 Self Tapping Screws 30 x 4.8 * 13 Self Tapping Screws 30 x 4.8 * 16 Self Tapping Screws 30 x 4.8 * 19 Self Tapping Screws 30 x 4.8 * 25 Self Tapping Screws Package List