Hello, I'm looking to see if anyone can point me in the right direction as what this is called and where can I get a replacement from. It's from my pvc window. The handle locking part has snapped so handle spindle is just spinning. Cheers
That’s the gearbox. You just need to order a complete new mechanism. Model is normally marked on the face though the same model name used with different lengths and backspacing but they’re pretty standard other than that. Go online to UPVC Spares as suggested or just Google replacement upvc window parts and take your pick. Pretty sure screwfix do a universal one but fit the dedicated one if you can find it. Very easy straight swap.