Comparison : Item # MC 23-1030, FR-5 Glass Reinforced Epoxy
Item # MC 23-1034, G-11 Glass Epoxy Resin
Item # MC 23-1040, G-11 Glass Epoxy Resin
Item # MC 23-1037, G-10 Glass Epoxy Resin
Item # MC 23-1043, G-10 FR-4 Glass Epoxy