Expand the capabilities of your already robust Ironmaster Super Bench with our preacher curl attachment. Preacher curls are one of the best bicep exercises for building definition and size onto your arms because they isolate the bicep so well. Use this attachment with a barbell. cable machine. or dumbbells. Our preacher curl attachment is designed exclusively for use with the Ironmaster Super Bench. Unlike most other preacher curl stands. our unit features adjustability for better personalization by either adjusting the bench angle or changing angle of the pad with the built in selector pin.