This is my second purchase in the KALL store.I thought I would receive φ 80mm 1,5kW but Anna sent me a φ 65mm 1,5kW.Small is beautiful.This small spindle is eager for tiuning - replacing the bearings with a quieter one.I suggest before the installation to unscrew the cover from the power side and re-assemble with an adhesive or gasket (I used silicone). Avoid getting water inside.I used the SAKO SKI780 2.2kW inverter for commissioning.Many thanks to Anna for help.Anna, thanks to your help, I always do safe shopping.Regards,Grzegorz