This fits your .

Easily change weight plates. The Tunturi spring collars enable you to quickly change weight plates during a workout. The plates can be removed by squeezing the spring collars. The dumbbell collars have a 30 mm diameter. These spring clips can be adjusted on all bars with a 30 mm diameter. Delivered in pairs.

TUNTURI Unisex's Weight Accessories Spring Collars Black 30 mm - B9YWRC7A7