SSB slider

I do not want to hurt the SSB which is finished beautifully by the way!
I often listen to such words.
For such customers, I made SSB sliders.
It will be an obstacle to running competition and general public roads, but the size is irrelevant if you use it for practice.
It is easy to install and remove, so how do you use it?

I am thinking that the test will be absorbed with the softness of Duracon if it is tightened firmly though it is now.

I will schedule a fee
1 set = 5000 yen change duracon = 2000 yen I think that it should be possible at this amount of money.

http://zrx-drz.at.webry.info/201701/article_8.html