Initial custom-made left-thread screws especially developed making for use on off road and truggy hands (the paid down shock mounts) to end the screws from switching reduced as a result of vibration. To be utilized merely on REMAINING BACK supply and RIGHT FRONT supply. The left-thread screws are made of comparable top-notch metal as standard right-thread screws. For effortless recognition these screws have actually in fact really a silver layer.