A Reaction to the Previous post
Good day to you.
Since our last post, some of customer asked us that same problem was happening.
Security fastener 『TRF(Tamper Resistant Fastener)』is used in a variety
of places for security and anti-theft purposes.
If you chase cheap prices, it is quite possible that you will
end up with a poor quality product like this.
SAIMA is selling security fasteners as TRF brand from 1998 in Japan. Now, our quality is highly regarded by many customers in Japan.

If you have any of these problems, please contact SAIMA first.