Solid Steel Material: The threaded barbell is made of solid steel, chrome-plated, and the surface is smooth and easy to clean, suitable for weightlifting and fitness exercises 1 Inch Hole: The triceps bar suit for weight lifting weight plate with 1 inch hole; The triceps are the three-part muscles on the back of the upper arm; Using Solid Tricep Bar can become better and stronger Diamond Knurled Handle: The diamond-shaped knurled handle of this tricep bar helps to make precise contact with your hand, is non-slip, improves the grip, and achieves an holding effect Lock Collars: The standard triceps bar has two hexagonal lock rings, which can be firmly fixed on both ends of the threaded end and prevent heavy objects from moving during exercise