Aluminum 1.5 inch Ball Head to Square Mounting Base 1.5" Rubber Ballhead Mount Bracket for 75x75mm 100x100mm VESA Standard Plate

Both products have the same material and ball diameter, with different hole spacing:

75*75mm Hole Base

75VESA Standard Interface 

75*75 and 100*100mm hole Base

75/100VESA Standard Interface

Product Name : 1.5 inch Square Base

Material : rubber ball + aluminum alloy base

Compatible devices: Compatible 1.5 inch rod 

Applicable scenes: agricultural machinery, industrial computers, storage equipment, ships, airplanes and so on.

Note: This product does not include screws and nuts.