Fangrui Product Details Fangrui Product Details The Pack Includes A Sufficient Quantity Of 12 Springs, Ensuring You Have Enough ; Whether Its For A Single Project Or Multiple, This Pack Accommodates Most Of Your Spring Needs. Each Spring Measures 0.39 Inch Wide And 2.8 Inch Long, Making Them Suitable For Various Machinery Repair, Industrial, Garage Door, And Diy Projects.this Proper Size Design Ensures Versatility Across A Range Of Tasks; Whether Youre Working In Industries, Repair Tasks, Research, Or Maintenance, These Springs Are Your Ideal Solution. The Coiled Design Allows These Springs To Provide Consistent Tension And Support For Various Applications. Featuring A Double Hook Design, These Stainless Steel Springs Provide Stability; The Symmetrically Designed Hooks At Both Ends Easy Installation And Secure Fastening On The Mechanical Equipment. These 12 Extension Springs Are Made From 0.047 Inch Spring Steel With Dual Hook Ends For Secure Attachment And Long-lasting Performance. They Are Designed To Withstand Significant Tension And Bouncing Back