D5830-20 a = 7 L = 125
D5830-21 a = 7.1 L = 120
D5830-22 a = 7.5 L = 120
D5830-23 a = 8 L = 125
D5830-24 a = 9 L = 130
D5830-27 a = 11.2 L = 145
D5830-29 a = 12.5 L = 160
D5830-30 a = 14 L = 165
D5830-4 a = 2.5 L = 80
D5830-5 a = 2.8 L = 90