Current Style Air Arms Female Fill Adaptor. Suits the Air Arms S400/S410/S200, S510, Alpha Pistol etc This is the Egg Cup hose fitting with the T BAR slot to locate on the new style fill valve with the T BAR retainer on the end of the filling valve. Also fits early New Style valves without the T bar on the end of the fill valve. (Quite rare) CAUTION - You are working with high pressure air, always be safe. Airgun 101 Shop is not responsible for any injury / damage to any person, third party or item when using this part.