These 1-1/2" Billet Brake Line Clamps are "TRICK". These clamps are like no other clamps available. These have one screw on each side to lock them down tight. They are chamfered around all edges so that there are no sharp edges to scratch or damage the finish on your Tucker Pro Arm/Modquad swingarm. These were designed specifically for our Pro Arms/Modquad swingarms. That is why they fit perfectly. In fact they are designed so that the brake line is held nice and snug against the arm.