Hammer adjuster non sparking ReferenceAlloyWeight001201 BeCu Hammer adjuster Beryllium copper 108 mm 108 mm 016101 AlBr Hammer adjuster Aluminium bronze 108 mm 108 mm 001202 BeCu Hammer adjuster Beryllium copper 141 mm 141 mm 016102 AlBr Hammer adjuster Aluminium bronze 141 mm 141 mm