POWERBLOCK LLC Power Block GF-SPDBLK24 Adjustable SpeedBlock Dumbbells (Pack of 2) Pair of adjustable dumbbell weights for efficient, cost-effective strength training Adjusts from 3 to 24 pounds in 3-pound increments (3, 6, 9, 12, 15, 18, 21, and 24 pounds) Selector pin lets you change weights easily, just like with weight stack at the gym More compact and balanced than traditional dumbbells; padded handle for wrist protection Offers maximum weight of 24 pounds per hand; limited 10-year warranty