Got this about a year or two ago to run oil temp and pressure sensors. Worked perfect. My new custom filter housing has provisions for sensors so I no longer need this. It replaces the stock pressure switch on the filter housing of the M5x/S5x engines. I didn't prefix the sale because it could well work for other applications, BMW probably has the exact same thread/pressure switch on a bunch of cars.
The block comes with a banjo bolt with washers to bolt the block in place of the switch. The bolt is not pictured but I have it, it's currently on my engine which is being rebuilt, will grab it later.
The block takes the stock pressure switch as well as two 1/8 NPT sensors. I'm not keeping the stock pressure switch so I'll leave it in the block, and I can leave the temperature sensor, I have a different one (diff thread), but I'm keeping the pressure sensor.