4.5m Pneumatic Telescoping Mast with Inside Wires for Mobile Masts Tower. Pneumatic Telescoping Design: Automatic extension and retraction with non-lockable collar for 4.5m extended height. High Payload Capacity: Supports 50kg vertical payload at 0.2Mpa working air pressure. Durable Aluminum Construction: Made from high-strength Aluminum alloy 6063T5 for lightweight durability. Compact Storage Height: Retracts to approximately 1.65m for easy transport and storage. Comprehensive Warranty: Includes a one-year guarantee covering mechanical defects. Fast Delivery Time: Standard lead time of 20 days, with peak/off-season times within 15 workdays. Versatile Mounting Options: Compatible with side mounting brackets, ground tripods, and quadpods.