◆ Thank you for viewing! We will handle initial defects if any. ◆ Shipping to Hokkaido, Okinawa, and remote islands requires an additional postage fee. Please comment in the comment section if applicable. 【Product Information】 Adjustable Dumbbells for Muscle Training, Power Block Dumbbells, One-Touch Adjustment, Adjustable Weight Training, One-Year Warranty Dumbbells, Adjustable Weight, Dumbbell Set, Block Dumbbells, Home Exercise, Arm Exercise, Gym, Muscle Training Goods, Muscle Training Equipment, Use Points Choose from three types of dumbbells: a maximum of 23kg/26kg for those who want to challenge themselves without overdoing it, and a maximum of 42kg to satisfy even bodybuilders! The sides of the plates are designed to be flat so that "on the knee," which is essential when using high-weight dumbbells, is possible. Also, because weight can be changed quickly, it is suitable for high-level training such as "super sets" and "drop sets." Just insert the locking pin. Weight can be changed in just 3 seconds. It has a simple structure where you only need to secure the plates on both sides of the core (handle) with locking pins, so there is no worry of malfunctions like with dial-type dumbbells. There is no stress such as "the adjustment is not working well..." or "it takes practice...". Because they are adjustable block dumbbells, you can do various training without going to a training gym. 【Product Size】 23kg: 31.8cm x 19.2cm x 19.8cm