1. Increase Strength, overload is key for building muscle. Powerlifting athletes, athletes and professional strongmen use fractional weight plates to achieve their workout goals. Add them to your dumbbells, kettlebells. 2. Save Money,Instead of investing in yet another set of dumbbells or kettlebells the micro-plates give you the option to increase the weight on the equipment you already own. 3. Compact & Easy To Clean,Slimline design ensures the plates do not restrict the user in their workouts. rubber coating makes them easy to clean and 't scratch your equipment like other steel products. A great addition for commercial gyms, garage gyms and home gyms! 4. Versatile,Flexible and easy to attach to your dumbbell and kettlebell sets. They can also be put on the grip of your barbell. 5. Compatible with all standard dumbbell and kettlebell sets. The perfect weightlifting accessories for men and women. Weight:0.25kg Inner diameter: 35mm Colour:Black Material:rubber+Metal Package Contents: 1 * barbell plate Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.