This wrench is specifically made for the lock nut on SU HD8 carburetors.  Please see the picture that shows where this wrench is utilized.  It is used in conjuction with a regular wrench to lock the two nuts together.  The factory calls this RH8050.

The handle on this wrench is removeable and can be installed sideways for extra leverage.

SU Carburetor Jet Lockplate Wrench 1/4" RH8050

SKU: BTW084
$42.00Price
  • All US shipping is $9.20 - no matter the size.

    Please contact us for an accurate international quote.

  • All British Tool Works tools are guaranteed for life.  No receipt necessary.  We will be astonished if one fails and we will ask plenty of questions, but it will be replaced post-haste or a refund given - your choice.  But honestly, that's not gonna happen.