This tool can be used as a wrench to remove the cylinder end plug (fill valve housing) allowing servicing of the o ring below. Works with old and new style fill caps (new style pictured). #

Fits; s300, s310, s400, s410 s410 TDR inc. Xtra models.

Please note this is a tool that has been modified for use on Air Arms plugs and will show signs where this modification has taken place (bare metal area).