Premium shift housing from Shimano, the OT-SP41 Shift Outer Casing is pre-lubricated with a special silicone grease for quick and precise shifting performance. Compressionless and offers the lowest friction, be sure to keep a roll of SP41 on hand for routine maintenance. Who's this item for: Any rider looking got a quality outer cableApplication: These are designed for use with SRAM and Shimano shifters. They will also work with Box, Microshift shifters and all brands of dropper posts that use a standard shift cable.Materials: Stainless steel. Standout feature: Pre-lubricated inner core with a special silicone grease Pros: High quality outer casing that performs very well long termCons: Not much, pretty near Note: Does not include cables, ferrules or endcaps.