The original, light-weight, portable, virtually indestructible, crenellated, interlocking pulling block. The Original is 19" long, 15.5" wide, 2" tall, and weighs a mere 10.5lbs. The standard for pulling from any position, easy to change configurations, and a small footprint for storage. Want to add a smooth top for easier plyo exercises? Add The Flat Top - sold separately. Need more surface area? The Double-Wide could be a better option. Features: Lightweight - 10.5 lbs. per block. Virtually indestructible - scrap plastics processed and hydrolic-pressed into into the patented, interlocking DC Blocks mold 19"L x 15.5"W x 2"H per block. Easy to stack to the height you need, easy to store when you don't; Best Uses; DC Blocks The Original - Set of 12; Good for lifting from the knees and plyometrics up to 24". DC Blocks The Original - Set of 18; Good for lifting from the clean power position for athletes up to approximately 5'7"; plyometrics up to 36". DC Blocks The Original - Set of 24; Good for lifting from the clean power position for athletes up to 6'; snatch power position for athletes up to 5'9"; 2 platform set-up for lifting from the knees; DC Blocks The Original - Set of 32; Good for lifting from the clean power position for athletes up to 6'6"; snatch power position for athletes up to 6'; multiple platform applications. DC Blocks The Original - Set of 40; Good for lifting from the snatch power position for athletes up to 6'6"; jerk boxes for athletes up to 6'; multiple platform applications. Best choice for outfitting your entire facility.