The PRCTZ 40lb (18.1kg) Adjustable Cast Iron Dumbbell Set is offered in multiple weight levels for you to choose from and its chrome knurled handle design allows this dumbbell to fit any free weight and strength training exercise at home or group workout with training partners! Our adjustable dumbbell has functional details such as textured handle for a tight and secure grip . adjustable metal plate system with (4) 3lb and (4) 5lb cast iron plates for flexible weight adjustments. PRCTZ LLC has been the fitness training accessory and equipment expert since 1986 . and all our products are 100% safety regulated being the #1 trusted choice by exercisers at any skill levels. We continue to innovate and create new ways to encourage active and healthy lifestyle.