Quick fit drill free bosch adapters
 

I'm thinking of getting some of these quick fit drill free adapters for my gas installation on my 940 with a B230FK, Anybody used them and which ones did you get, I've asked different companies about the length/depth of the part that sits in the fuel injector hole/slot in the inlet manifold but had no replies, the hole in the inlet manifold is 10.90mm as best as I can measure, some of these adapters have only 1 seal, others have 2-3 or even 4 seals, so I don't know which to get, can anyone advise please. David