Alvin Twist-Lock Telescoping Tube – 3" I.D
These telescoping tubes adjust in length from 24" to 40" with a 3" inside diameter. Twist-lock adjusts for desired lengths at 3/4" increments. Made of durable black plastic tube is water-resistant. Features twist-off screw cap with a window for viewing contents inside tube identification label to mark its contents and adjustable shoulder strap.