curl bar prevents full contraction of the biceps, which can only occur with the wrist fully supinated, and thus may prove a less effective exercise. Fixed Barbells Primarily found in gyms, these are usually fairly short bars with weights already attached and welded to the bar, and in some cases, a covering of plastic/rubber around the plates. A typical gym might carry a range of fixed barbells from 5 kilos (11 lb) to around 50 kilos (110 lb). They are handy as they take less space than full-length bars and are useful for many exercises where less weight is required. They can also provide an easier starting point for beginners before moving on to using the full olympic bars. In addition, they provide for speedy transitions between various weights if one is doing multiple weights in quick succession. Thick-handled Barbells These specialty items are designed to challenge the grip. They're used in strongman competitions for the deadlift and overhead presses, such as Apollon's Axle. Recently, even such exotic diameters as have appeared. They are made in China, and can weigh up to . Triceps bars Similar in function to an EZ curl bar, the triceps bar consists of two parallel handles mounted in a cage. It is used to perform triceps extensions and hammer curls. Trap bar/hex bars A hexagon-shaped bar in the middle of which the user stands and grasps the bar, via side handles, with a neutral grip. The use of trap bars places the center of gravity closer to the lifter. Trap bars are used primarily for performing deadlifts and shrugs. Safety squat bars A bar with a camber in the middle, two handles and padding. The safety squat bar may help to avoid causing or aggravating injury while squatting. See also Kettlebell References Weight training equipment Weightlifting