Arm housings for locking tremolos. These are replacement housings that house the tremolo arm for locking tremolos. These are one of the most strained parts of the tremolo, and can often be worn out through prolonged use. These will be in a drop in replacement for a tremolo of the same dimensions. They have a thread on the upper half where the tremolo arm screws onto it.
Dimensions -Length: 22mm
Thread diameter: 9mm
Unthreaded length diameter: 8mm
Mid section lip diameter (maximum point): 11mm
Internal diameter: 6mm