Compatible with the IC4, IC5, IC6, IC7 Indoor Cycles and IC8 Power Trainer, the dumbbell holder enables the class to transition between cycling and weight training seamlessly. A lightweight steel wireframe construction easily attaches to the seat-post stem behind the rider, with no interference with their pedal stroke. Easily accessible Securely mounted to seat-post Holds up to 10LB / 4KG Material: Steel wireframe Color: Black Dimensions: 7.5" x 7.1" x 3.9" / 19 x 18 x 10cm Warranty (Parts): 1 Year *Dumbbells not included