RAM 4.75" Square 100mm x 100mm VESA Base with 2.25" Ball

Features: VESA 4.75" square adapter plate with 4x100mm holes and 4x75mm holes in each corner RAM 2.25" rubber ball is connected to the plate -  fits RAM 2.25" ball (D size) compatible socket arms Includes washer inserts for use with smaller screws Constructed of powder coated marine grade aluminum Holds up to 6 lbs. Made in the USA   Plate Hole Patterns: 100 x 100 VESA Pattern 75 x 75 VESA Pattern 100 x 50 Half VESA Pattern   Brand: RAM Mounts Part number: RAM-D-246U Warranty: Manufacturer's lifetime warranty