Remove and install internal snap rings 3/8 to 1-3/4_ in diameter. Set includes 5 pairs of interchangeable points in the following sizes: 0.39_ diameter, 15¡ angle; 0.048_ diameter, 15¡ angle; 0.074_ diameter, 15¡ angle; 0.039_ diameter, 45¡ angle and 0.047_ diameter, 90¡ angle. Use 447 and 448 point sets with these pliers. Use 5/64_ hex key when replacing points.