Gas Battle Forged Spanner Gas battled forged spanner. The larger end (28mm) is for fitting an industrial regulator to a cylinder. The smaller end (21mm) is for fitting hoses to the regulator. Category: Gas Accessories Enquire Now × Enquiry about Gas Battle Forged Spanner Enter your name : Enter your Email Address : Enter enquiry subject : Enter your phone no : Enter your address : Enter your Message : Security Code SI7VGDO2 Enter the security code shown above Related products Read more Double Male Adaptor Connection Read more Oxygen – Acetylene Hose Set 10mm Bore 10mtr long Read more Gas Y-Piece Adaptor Read more Koike LK-12 Beetle Straight Line Cutter