Item DescriptionReplacement parts for Lezyne hand and floor pumpsABS (air bleed system) chuck allows release of back pressure and eliminates the chance of unthreading Presta valve coresLZ-6106 ABS hose fits Dirt series pumps (high volume, low pressure), LZ-6105 nylon-braided ABS hose fits all other Lezyne floor pumps (braided version upgrades some models that came with a standard hose)Item Specificationsdescription: standard ABS hose, Dirt-series floor pumps: