Material: This pull up bar for doorway is made of high strength steel, special surface treatment, smooth, bright, strong and sturdy enough to use. Doorway Exercise Bar: Adjustable width telescopic design, has a retractable length of 62cm that can be extended up to 100cm to fit various type of door frame. Easy to Use: Easy Installing, no screws needed and easy to assemble and disassemble without scratching your door frame. Feature: Security lock degisn prevent the chin up bar from rotating during use, thickened steel pipe has large bearing capacity. Extended sponge absorb sweat, anti slip, providing extra comfort to hand. Application: Multifunctional door workout bars do various exercises such as pull ups, chin ups, sit ups, push ups, crunches, stretching, etc. Specification: Material: SteelSize:62cm-100cm/24.41inch-39.37inch Package Includes: 1 Pull Up Bar?for Doorway Note: Please allow slightly errors due to manual measurement and different monitors.