You can strengthen your entire core with this versatile attachment! This Hypercore simply plugs into the bench and turns it into a 45 degree hyper extension bench for: Hyper Extensions – Lower back, Roman Chair – Abs, Oblique Crunch – Side Obliques, and Reverse Hyper – Glutes/Ham.

The attachment has an adjustable foot holder for users of different heights and is very stable. You get about a 90 degree bend for range of motion. You can hold a weight plate or dumbbell for an extra challenge. Load limit is 300 lbs - 136kg.

Dimensions are 23" wide x 20" deep x 58" long. When attached to the Super Bench it requires 23" extra length and the top of the pads are 44" from the floor. This item only includes the Hyper Core Attachment - Super Bench sold separately.

Lee Priest has some tips after some hyperextensions here:

Takes users up to 136 kg.

Ironmaster offers a 10 year warranty frame warranty (excluding paint or plating) for their benches, machines and optional attachments. Pads, cables, pulleys and upholstery are covered by a one year warranty. Warranty is for domestic use.