Reddit reviews TEKTON 10 to 17 Inch Telescoping Basin Wrench (3/8-1-3/8 in.) | WRN92002
We found 2 Reddit comments about TEKTON 10 to 17 Inch Telescoping Basin Wrench (3/8-1-3/8 in.) | WRN92002. Here are the top ones, ranked by their Reddit score.
Fits 3/8 to 1-3/8 in. diameter nuts on faucets, supply lines, valves and drainsLong-reach telescoping shaft extends from 10 to 17 inches, adapting to any situation180-degree pivoting head holds its position at any angle to access hard-to-reach nutsSpring-loaded jaw automatically adjusts to size and creates a continuous ratcheting action that stays engaged with the nut after each turnRemovable 6-inch, high-leverage handle allows compact storage in drawer or toolbox
Call Grohe for the spray replacement and ask them for the o-ring for the base. I am sure they will either send it for free or charge something that is much cheaper than new faucet. To remove the faucet you'll need faucet wrench. Make sure you use plumber's putty when installing faucet back so no more leaks will form. Easy fix.
Assuming it's the same system as around here, there isn't a lot you can do without proper tools. You'll need a tubular spanner of appropriate length and WD40.
Spanner can either be a more professional one like these: https://www.amazon.com/TEKTON-WRN92002-Telescoping-Capacity-10-Inch/
Or a cheap metal/plastic one if you think it'll move without too much resistance:
https://www.amazon.de/Connex-COX583007-Steckschraubendreher-mit-T-Griff
https://www.amazon.de/Steckschlüssel-Doppelendiger-Wasserhahn-Befestigung-Schraubenzieher
WD 40 helps to address rust. If you want to use heating (dangerous in close confines), make sure you let it cool before screwing and spray with WD 40 after. The heating is to "crack" the rust by widening the parts. If you try to screw while hot, the expansion will work against you.