This Manfrotto/Avenger X404 CrossPole Kit is a heavy duty crosspole system consisting of two nesting 7.21' (2.2 m) poles, a static plate, expanding plate, and locking collar.
Static Wall Plate
The static wall plate has a special component that pivots to allow the tubes to bend and guarantees the maximum grip with suitable (brick, cement, heavy plaster with studs) walls. It is provided with leveling bubble and assembled with bolts (no rivets).
Expander
The second plate is the expander. It has a pre-loading index which can be pre-set to the distance between the two walls so that the CrossPole's tension can be fine-tuned with minimum adjustment: designed to guarantee the maximum safety and resistance for the CrossPole's working life.
Locking Collar
Dedicated component that prevents the telescopic tube from sliding under load, this item is provided with aluminum handle grips and rubber covers.