Adjustable Dumbbells for Muscle Training, Power Block Dumbbells, One-Touch Adjustment, Adjustable Weight Training Choose from three types of adjustable dumbbells: a maximum of 23kg/26kg for those who want to challenge themselves without overdoing it, or a maximum of 42kg to satisfy even bodybuilders! The sides of the plates are designed to be flat so that "on-the-knee" is possible, which is essential when using high-weight dumbbells. Also, because weight can be changed quickly, it is suitable for high-level training such as "supersets" and "drop sets." Just insert the locking pin. Weight can be changed in just 3 seconds. The simple structure of just securing the plates on both sides of the core (handle) with locking pins eliminates concerns such as malfunctions like dial-type dumbbells. There is no stress of "the adjustment is not working well..." or "it takes some getting used to..." Because they are adjustable block dumbbells, various training is possible without going to a gym. [Product Size] 23kg: 31.8cm x 19.2cm x 19.8cm Adjustable Dumbbells Power Block Dumbbells 23kg Set of 2 Adjustable Dumbbells Shipping is included in the price, but separate shipping charges apply to Hokkaido, Okinawa, and remote islands. In that case, we will change the price, so please let us know in the comments before purchasing. If shipping to areas other than the above, you can purchase immediately. 6