Vertical Knee Up / Dip Station Commercial Grade [Synergy Series]Synergy Series Vertical Knee Raise & Chin Up Station Commercial VKR Core Trainer The Vertical Knee Up Dip Station (Commercial Grade) from the Synergy Series is a versatile piece of equipment designed to improve core strength and upper body fitness. It offers both stability and comfort, ensuring durability for long term use. With angled arm supports, a comfortable back pad, and textured steel step platforms, this station allows for controlled movements