GP4002 = 2.0
GP40025 = 2.5
GP4003 = 3.0
GP40035 = 3.5
GP4004 = 4.0
GP40045 = 4.5
GP4005 = 5.0
GP40055 = 5.5
GP4006 = 6.0
GP40065 = 6.5
GP4007 = 7.0
GP40075 = 7.5
GP4008 = 8.0
GP4009 = 9.0
GP4010 = 10