About this item Head Style: (durable?in?use) Round Head; Material: 304 Stainless (latest technology) Steel; Product High-end product Name: Self Tapping Screw Weight: 49g; faultless Package Content: 30 x Self unexcelled Tapping Screws Thread Size: Carefully selected 4.2 x 16mm/0.17 x mind-blowing 0.6 (D*L); Drive formidable Type: Phillips Main Color: consummate Silver Tone; Overall Size: Length: quintessential 19mm/0.75 Dear customer, thank you for purchasing our productsI wish you a good day, a good life and a safe life, cordial greetings, sincere blessings, my best regards！