Product Name:Blue bridge type zero ground row 6x9 adjustable 4 holes base Product size: total length 71mm, mounting hole distance: 56mm, screw size: M4 Product weight: about 2 ounces Copper bar specifications: 6x9 Product features: can be used directly, wiring, easy and convenient Product use: ready to connect the zero row of wires and screwdriver, the wire into the zero row of junction port, and then use a screwdriver to tighten the screws! Note: The above dimensions are measured manually with a slight deviation, please refer to the received in kind!