uxcell GA/GB 37mm diameter DC Geared Motor Mounting Bracket Holder + 6mm Hex Coupling Hex Couplering Size: 18 x 12mm / 0.71" x 0.47"; Ellipse Hole Size: 27 x 13mm / 1.06" x 0.51"; Country of Manufacture: CHINA Color: Black; Bracket Size: 46 x 42 x 40mm/1.8" x 1.65" x 1.6"(L*W*H); Bracket Mounting Hole Dia: 3.5mm/0.14" Material: Metal; Net Weight: 35g Package Content: 1xDC Geared Motor Bracket 1xDC Geared Motor Hex Coupler 13xScrew; Main Color: Black Hex Coupler Female Thread Dia: M4; Hex Coupler Hole Dia: 6mm/0.24"