<►> R - "Re-inforced" flange For oval / S-type based/ rounded 50ml cartridge systems. Lightweight - Molded From Glass Reinforced ABS. .2.5Kn (250kgf) .Manual ..50ml 1:1, 2:1, 4:1, 10:1 - 75ml 1:1 - 25ml 1:1 .Bead .240g .13:1