Ensure safety while using a weight bar with these Spring Collars from Ignite by SPRI. These collars will safely hold weights in place on a 1" diameter bar, with a high-quality spring made from stainless steel construction and easy grip rubber-coated handles. These can be used on either dumbbell handles or lifting bars for extra safety, to prevent weights from sliding off during use. Each spring collar can hold up to 50 pounds and measure 2.9 inches by 0.6 inches. Improve the safety of your at-home weight lifting practice with the addition of Ignite by SPRI's Spring Collars. No assembly required. Comes as a pair of two spring collars.