While Magura therefore advises against experimenting with the new Shimano fittings, the British premium manufacturer HOPE has reacted quickly. The new "Mono" Mini and M4 brake calipers can be ordered for operation with DOT brake fluid or mineral oil as required. In contrast to the Magura brakes, the British stoppers can therefore be combined with "Dual Action" levers, as the HOPE developers have adapted the hydraulic transmission ratios specifically to the "Dual Action" lever. To avoid confusion, the Shimano-compatible brake calipers should also be visually distinguishable from the standard brake calipers in the HOPE range.