HARDLOCK-LUGNUT will not loosen the tension rods. It was developed with “HARDLOCK Industry Co., Ltd.“, which produces the world-recognized "ultimate locking nut." The strong anti-loosening effect of the wedge prevents loosening by strongly locking the tension rod with the nut. It also has an innovative feature that allows you to adjust the tension rod without loosening it even if it is locked.

Recommended for 

- When there is no time between songs, such as during a live performance, and you are concerned about the pitch dropping.
- Prevents bottom tension rod from falling
- When you want to maintain the sound quality you like as much as possible
- Those who find it troublesome to correct the pitch every time.
- Those who are worried about whether it really won't loosen.
- Those who want to experience the power of Hardlock Lug Nuts