FITS INNER 5CM WEIGHT BARS: Designed with a 20cm x 10cm (7.87in x 3.94in) long axis bar sleeve with a base to fit inner 5cm weight training bars and weight boards. EASY TO INSTALL WITH SECURE KNOB: Insert bar and weight board into the sleeves and tighten the bar in place with the secure knob. FULL 360 DEGREE SWIVEL: Full range swivel up and down for a variety of exercises. Ideal for total core workouts targeting traps, biceps, back, shoulders, abs, hamstrings, and more. GREAT FOR STRENGTH TRAINING: Enables movements that are difficult or impossible with a traditional barbell or dumbbell. Increases exercise intensity for Deadlifts, Squats, Single Arm Rows, and Presses. PERFECT GIFT: A great gift for sports and fitness enthusiasts looking to build full-body strength. Specification: Material: EVA, Metal Color: Black Size: 20cm x 10cm (7.87in x 3.94in) Inner Diameter: 5cm (1.97in) Package Includes: 1 x T-Bar Row Attachment Note: 1. Please allow slight measurement deviation due to manual measurement. 2. Due to monitor differences, the image may not reflect the actual color of the item.