Key features

• •►【Advanced Material】：The Screw is Made Of High-Quality Black Steel Material, The Surface is Treated By a Special Process, They are Strong, High Strength, Anti-Corrosion and Anti-Rust, Different Away From Ordinary Screw,it Never Deform Or Break Off. Help You To Complete Your Work More Efficiently and Happily!
• •►【Multifunctional】：Screws Can Be Used to Dry Walls Or Fix Wood. In Addition,its High Strength Helps it Can Be Used On Metal! This Excellent Screw System is a Good Helper For You. Ideal For Home, Office, Building Or Workplace Etc!
• •►【Various Sizes】：To Provide You With The Most Commonly Used 8 Sizes (20 Each) [# 7 × 3/4 "—20mm], [# 7 × 7 × 1" —25mm], [# 7 × 1 -1/4 "—30mm], [# 7 × 1-3 / 8" —35mm], [# 7 × 1-5 / 8 "—40mm], [# 7 × 2" —50mm], [# 7 × 2-1 / 2 "—60mm], [# 7 × 3" —70mm].These Screws are Made Of High-Quality Elements, Not Only Environmentally Friendly, But Also Mercury-Free And Non-Toxic, So You Can Use Them With Confidence!
• •►【Convenient To Carry】：The Screws Are Packed in a Sturdy And Durable Box With Many Separate Compartments. These Screws Can Be Kept in Different Compartments According To Their Size. It is Very Convenient To Distinguish Them in Your Use and To Carry Them Anywhere You Want To!
• •►【Better Customer Srvice And After Sales】：If You Meet Any Problems, Please Send Message To Us Immediately, We Will Reply In The First Time And Try Our Best To Help You And Brand New Replacement Post Within 24 Hours If Any Defective Item When Receive .