STOZM Combo of Olympic Dumbbell Handles and Max Grips is a perfect option for building arms' strength & size. Thick grip training can also increase grip strength – the key for unlocking hidden gains. Grip strength allows you to do more in your workouts & makes everyday tasks easier & faster. STOZM MAX GRIPS FOR DUMBBELLS -Inspired by the water-drop shape from nature, the barbell grips feature an ergonomic design & textured surface to add comfort & prevent slipping. -The high-quality TPE material with CP65, REACH & RoHS Certifications is safe to use & does not cause irritation or sensitization in the case of repeated contact with the skin. -STOZM Max Grips have 02 sizes 2.25 & 2.75-inch outer diameter to fit all training goals & hand sizes. -The fat grips feature a 1-inch inner diameter, which is compatible with most barbells, dumbbells, chin-up/pull-up bars, and cable attachments in seconds. These fat grips can be used as bar pads to perform barbell exercises. STOZM OLYMPIC DUMBBELL HANDLES -Constructed from solid steel with chrome finish, the Olympic Dumbbell Handles guarantee to stand the test of time. -The diamond knurled handles provide a sturdy, better grip, as well as reduce injury risks. The handle bar sleeves can swivel to ease the pressure off your wrists during workout sessions. -Each Olympic Dumbbell Handle has a maximum weight capacity of up to 150lbs, enabling you to train a wide variety of exercises. -The dumbbell package weighs only 18.08 pounds, which is great for easy transportation and storage. WARRANTY 1-year warranty & 30-day return for Max Grips and 5-year warranty & 30-day return for Olympic Dumbbell Handles (contact seller for more details)