The MAP QRS Extending Accessory Bar is designed to fit snugly across the footplate of MAP seat boxes, attaching onto the front legs and coupling with Quick Release arms to make the most of the box's layout. It allows you to connect keepnets, pole socks, and other accessories, with round inserts that make attaching and detaching them quick and easy. Features: - Supplied with inserts to fit 25mm, 30mm and 36mm round legs - Standard Model: 2 spray bar clamps - Extending Model: 4 spray bar clamps