Sportneer Pull Up Bar: Strength Training Chin up Bar without Screws Adjustable 29.5'' 37'' Width Locking Mechanism Pull up Bar for Doorway Max Load 440lbs for Home Gym Upper Body Workout, Non slip Urinary Tract Infection Tests 【Easy To Assemble】Explicit instruction and Keyless and Key Unlocking 【Easy To Assemble】Explicit instruction and plastic joints make it easy to assemble Adaptable Brilliance: Experience Optimal Display Visibility with our 4 Level LED Clock Display Dimmer No Traces】: The Sportneer pull up bar uses innovative fixative technology to hold the bar in place without the need for drilling Simply twist the bar to adjust it to any size within 29