Hex Dumbbell - Black Rubber Encased - 50 lbs. Chrome plated, knurled, and contoured handle for comfortable grip. The tough rubberized outer shell really comes in handy when you need to let them go when doing bench flys. You can easily read the 50 lb label which is molded into the rubber for easy reading.
Use a pair of 50 lb rubber hex dumbbells to perform standing arm curls as shown below: