Newport model HVM-1i, 1 inch mirror / optics mount, industrial, vertical drive with 2 Locking Allen-keys
Used mounts in in good working condition. The adjusters were sealed with a dab of thread-lock. This is easily removed by backing out the lock and adjuster a little bit and cleaning the threads with a cotton applicator and acetone.
Specifications:
Mechanism:             Kinematic
Optic Diameter:       25.4 mm
Adj Screw Thread:   80 TPI
Adjustments:            θx, θy
Sensitivity:                2.5 arc sec
Angular Range:        ±3.5°
Material:                   Anodized Aluminum
Drive Type:               Allen-Key, locking
Mounting Thread:     8-32
Optical Axis Height:  25.4 mm
Special Features:     Slim Profile