Check the listing for details. RAM-2461-247U-3 RAM 3" Square Post Clamp Mount with 75x75mm V.... Color: Black, Condition: New. Listed at 102.44 USD. RAM 3" Square Post Clamp Mount with 75x75mm V... RAM-2461-247U-3 Genuine RAM Products! The RAM-2461-247U-3 consists of a 3 INCHES clamp base, double socket arm and 3.625 INCHES square base that contains a 75mm X 75mm VESA hole pattern. Designed into the mount is a 1.5 INCHES diameter patented rubber ball and socket system with adjustment points at both socket ends of the arm.hardware included (2) 5/16 INCHES -18 x 3 INCHES Machine Screws(2) 5/16 INCHES -18 Nylock Nutsclamp range 3 INCHES max widthsocket to socket length 4.66 INCHES hole pattern 75 x 75mm VESAplate size 3.625 INCHES x 3.625 INCHES ball size C Size (1.5 INCHES )weight capacity Standard Use: 4 lbsHeavy-Duty Use: 3 lbsmaterials Marine-grade aluminumpackaging type Poly BagWeight 1.61 lb hardware included (2) 5/16 INCHES -18 x 3 INCHES Machine Screws(2) 5/16 INCHES -18 Nylock Nuts clamp range 3 INCHES max width socket to socket length 4.66 INCHES hole pattern 75 x 75mm VESA plate size 3.625 INCHES x 3.625 INCHES ball size C Size (1.5 INCHES ) weight capacity Standard Use: 4 lbsHeavy-Duty Use: 3 lbs materials Marine-grade aluminum packaging type Poly Bag Weight 1.61 lb