12 x 12 hinged base 3/8 " pins mount the radar directly to the hinged base for pivoting fore or back 180 degrees for clearance under bridges or storage in low structure ALSO THIS BASE CAN BE DRILLED TO YOUR NEEDS or EXTENDED PIVOT POINTS PIC #7 IS AND EXAMPLE OF A EXTENDED BASE AND PIVOT POINT NOW YOU ADD GAS SHOCKS FOR RAISING AND LOWERING EASIER