To view the bottle with a different cap, choose a letter from the following table under the Cap Section. "OB" Series Ref. Volume Caps Material OB30 30cc 81 39x22.5 A PP OB 60 60cc 109 46x23.5 A PP OB125 125cc 147 57x31.5 A PP OB125 125cc 147 57x31.5 B PP OB250 250cc 200 71x37.5 A, C PP OB250 250cc 208 71x37.5 D PP OB500 500cc 240 88x45 A, C PP OB800 800cc 230 102x56 D PP OB1000 1000cc 268 114x59 A, C PP Optional Caps A B C D