Safety Whip Hose 60cm 1/4"BSP - Standard PCL Adapter
The Health & Safety Executive Guide HS(G) 39 states "requirements for quick acting couplings apply to most percussive and vibrating air tools, which may be fixed or handheld. If a quick acting coupling socket is fitted at the hose end adjacent to the tool, the plug should not be screwed directly into the inlet port but should be fited onto a short isolation hose (0.5m to 1m long), thus isolating the plug and socket from the tool vibration.