D5830-28 a = 12 L = 155
D5830-29 a = 12.5 L = 160
D5830-30 a = 14 L = 165
D5830-31 a = 14.5 L = 175
D5830-32 a = 16 L = 180
D5830-33 a = 18 L = 200
D5830-1 a = 2.1 L = 60
D5830-2 a = 2.24 L = 70
D5830-3 a = 2.4 L = 70
D5830-4 a = 2.5 L = 80