Bells of Steel Shoulder Boulder/Chest Fly Attachment

The Shoulder Boulder is compatible with Bells of Steel Hydra and Manticore racks, as well as any rack featuring 3-inch width or length tubing and 5/8-inch holes. Always verify your rack's hole spacing and tube dimensions before purchasing to ensure a secure fit.

Unlike dumbbells, which lose tension at the bottom of the movement, this attachment maintains consistent resistance throughout the entire range of motion. The design isolates the chest and delts more effectively, reducing bicep involvement and allowing for a safer, more controlled rep.

Yes, it is designed as a versatile shoulder solution. You can perform lateral raises, single-arm front raises, and rear delt flies, making it a comprehensive tool for targeting all three heads of the deltoid.

Yes, for safety and stability, your power rack should be securely bolted to the floor or weighted down. Because the attachment extends outward, it can create leverage that might tip an unanchored rack during heavy sets.

While it isn't a direct replacement for a cable machine, it serves as a highly effective alternative for chest flies. It provides a similar smooth, constant tension profile that is superior to free weights for hypertrophy training.

The 360° dial allows you to precisely set your starting position for different exercises, ensuring you get the optimal stretch and range of motion. It also functions as a safety catch, preventing the arms from swinging too far and protecting your joints during the movement.