I chose this product because I don't have the budget to make scaffolding and it is dangerous to work on a ladder because I am an elderly person. I found out on the internet that Mr. Monotaro sells this product.・ If a flat brush or roll brush is attached to this length, it will be 2.5 m. The exterior wall painting came easily up to 4.0m. There was no danger, no stepladders or ladders were required, and costs were saved. The painting work was awkward due to the high places, but as I got used to it, I became able to do it cleanly and quickly. The aluminum joint handle was stretched out at high places and shortened at low places. I could do it without asking a painter, so it was cheap and it was very helpful.
(Translated by machine.)

It can be light. Durability is also good. It can be expanded and contracted, and the price is less than half of the genuine product.
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I bought it to make my own long-handled magic hand. I removed the spring of the plastic clamp, made a part to grab an object, and fixed it to the aluminum slide joint handle using the reach purchased at the same time. It is structurally impossible to pinch it with a strong force, but if it is light, it can be firmly grasped and it is quite convenient. If it was a product from the beginning, I didn't bother to make it myself, but I didn't have it, so I made it myself.
(Translated by machine.)