A nut that is attached onto a general hex nut that has been mounted to prevent loosening. Requires a dedicated tool.[Features]· Used after the general hexagon nut is closed.· At the same time as tightening, the nut is brought into close contact with the end surface and further tightened to cause distortion due to the spring steel, and the repulsive force acts as a wedge that deeply digs into the threaded part of the bolt, and exhibits a locking effect.

Prevents the nut from falling and closes the bolt screw thread by just mounting regardless of whether it is new or old, and the hyper load spring itself will not loosen either.[Features]· The nut is set in the bolt pitch to prevent it from loosening or falling off.· Very easy and can be tightened by hand.· It is possible to tighten even the already installed BT.

A knob nut that can be easily tightened or loosened by hand with butterfly-shaped wings on the handle.

A knob nut that can be easily tightened or loosened by hand with butterfly-shaped wings on the handle.

A knob nut that can be easily tightened or loosened by hand with butterfly-shaped wings on the handle.

A knob nut that can be easily tightened or loosened by hand with butterfly-shaped wings on the handle.

A knob nut that can be easily tightened or loosened by hand with butterfly-shaped wings on the handle.

A knob nut that can be easily tightened or loosened by hand with butterfly-shaped wings on the handle.

A knob nut that can be easily tightened or loosened by hand with butterfly-shaped wings on the handle.

A knob nut that can be easily tightened or loosened by hand with butterfly-shaped wings on the handle.

A knob nut that can be easily tightened or loosened by hand with butterfly-shaped wings on the handle.

A knob nut that can be easily tightened or loosened by hand with butterfly-shaped wings on the handle.

A knob nut that can be easily tightened or loosened by hand with butterfly-shaped wings on the handle.

A knob nut that can be easily tightened or loosened by hand with butterfly-shaped wings on the handle.

A knob nut that can be easily tightened or loosened by hand with butterfly-shaped wings on the handle.

A knob nut that can be easily tightened or loosened by hand with butterfly-shaped wings on the handle.

A knob nut that can be easily tightened or loosened by hand with butterfly-shaped wings on the handle.

A knob nut that can be easily tightened or loosened by hand with butterfly-shaped wings on the handle.

A knob nut that can be easily tightened or loosened by hand with butterfly-shaped wings on the handle.

A knob nut that can be easily tightened or loosened by hand with butterfly-shaped wings on the handle.