High Quality Materials Diyife Padlock Is Made of High Quality Zinc Alloy. The Shackle of The Padlock Is Made of Stainless Steel, Which Is Rustproof and Corrosion Resistant. It Is The Most Durable and Secure Padlock. .Super Security & Anti-Theft 4-Digit Passwords Provide 10,000 Password Combinations That Improve Security and Better Protect Your Personal Belongings. You Can Set Any Combination of Numbers As A Password. However, Be Careful of Your Password. There Is A Password Window On The Side To Better Protect The Password Wheel. .Easy To Carry & Easy To Use The Padlocks Are Extremely Compact. A Single Clasp Weight Is 147G, The Size Is 80Mm*43Mm*20Mm. You Can Use It Anywhere and Don'T Need To Carry A Key With You. .Wide Application The Lock Is Designed for Both Indoor and Outdoor Use, Suitable for Most Light Duties Such As Gym/Sports, School and Employee Lockers, Cupboards, Suitcases, Wheels and General Filing . No Need To Carry The Key, You Can Use Diyife Padlocks At Any Time.