Base has 2 bolts for table mount (rail clamp 63.5mm wide)
Top has flat plate with VESA 75 and VESA 100 spaced holes
Arm length is 142.8 mm with double socket arm for 38 mm ball base
Single clamp for full adjustments
Use to mount Panel PCs or LCDs or FIELD tablets at a convenient angle (typical for in vehicle use)