uxcell DC Dual Stepper Motor Driver Controller H-Bridge Board for HG7881 Power Supply: DC 2.5-12V; Country of Manufacture: CHINA Material: Electric Parts; Net Weight: 7g Package Content: 1 x DC Dual Motor Driver Controller; Model: for HG7881 Main Color: Green, Blue Size: 29 x 23mm / 1.1" x 0.9"(L*W)