BodyKore Replacement Bands for the Body By Jake MachinesAvailable Sizes (1) 2.5lb Bands(1) 5lb Bands(1) 10lb Bands(1) 25lb Bands(1) 50lb Bands(2) 100lb Bands(2) 2.5lb Bands(2) 5lb Bands(2) 10lb Bands(2) 25lb Bands(2) 50lb Bands(2) 100lb BandsThe bands are made of a composite rubber material that is made for stretching. There is a thick rubber ring around the hole where the bands tend to rip for extra reinforcement. They are built to last and made for durability. Thick Rubber, Durable, New Design, Made for longer lasting usage Made of composite rubber for durability Perfect fit for Body By Jake machines Printed marking showing the weight resistance The dimensions of each band are below: 100lb Band: 9"L x 2 3/4"W x 1"H. The diameter of the hole is 1" 50lb Band: 9"L x 2 3/4"W x 1"H. The diameter of the hole is 1" 25lb Band: 8.5"L x 2 1/2"W x 1"H. The diameter of the hole is 1"10lb Band: 8.5"L x 2 1/2"W x 1/2"H. The diameter of the hole is 1" 5lb Band: 8.5"L x 2 1/2"W x 1/2"H. The diameter of the hole is 1"2.5lb Band: 8.5"L x 2 1/4"W x 1/4"H. The diameter of the hole is 1" These will work on the following Body By Jake Machines: Total Body Trainer, Ab Machine, Cardio Cruiser, Bun and Thigh Rocker, Ab Back Plus, Bun Rocker, Ab Scissors and more! *If you're not sure if the bands will fit your machine then please send us a message and we'll be happy to check for you.