Ball Nut Mount Bracket Flange Nut Mount for 1605 1610 16mm Ball Screw Router Ball Screw Size: SFU 1604,1605, 1610 Mount Dimensions: 48mm x 38mm x 35mm(1.89" x 1.50" x 1.38") Mount Material: Solid 6061 Aluminum Surface Treatment: Anodizing, Black Dye Hardware Size: M5 x 17 or M5 x 20mm