Thread Adaptor M20 x 1.5 for BGS 7772

– required when using the sliding hammer
  BGS 7772-2, 7772, 7776
  in conjunction with e.g. hook BGS 7777-5,
  injektor claws BGS 7777-1, 7777-2, 7777-3
– inside thread M20x1.5 to outside thread M18x1.5