 D     D1     MD
(20    24     8)
(30    34     8)
(40    45     8)
(50    55     10)
(60    65     12)
(80    85     12)
(100   105    12)  
(150   160    16)  

(25.4  28.58  6.35)
(31.75 34.93  7.9375)
(38.1  41.28  7.9375)
(50.8  57.15  9.525)
(76.2  82.55  12.7)
(101.6 107.95 15.875)
