Extension Poles adjust with the simple squeeze of our new dual-pin locking device and combine fiberglass and aluminum poles making them incredibly lightweight and durable. Adjust from 4' to 8'High-quality adjustable extension poles are a combination of fiberglass and aluminum for making them lightweight and incredibly durable. Poles feature standard 34" adapter thread and a new style locking system to prevent aluminum inner pole from twisting. Two-piece poles extend to double their retracted length.