NB - these couplers have a 5/8" BSP male thread (not 1/2" BSP which is UK standard).

S-Type Keg Coupler - Full Stainless 

available as : 

• with 8mm (5/16") pushfit
• with 9.5mm (3/8") pushfit
• no pushfits

The S-Type Coupler has a noticeable longer engaging pin than the almost identical D-Type Coupler.
Suitable for attaching Asahi, Heineken, Hofbrau Kegs

All versions Include:

• 1 x - S-Type Coupler with 5/8" BSP Male Beer and Gas threads
• 1 x - Non-Return Ball or Torpedo check piece (Non-Return Liquid)
• 1 x - Gas Duck Bill valve (Non-Return Gas)
  
• Pushfits as options above