MarlaMac
Songster
I am not sure where you got this information. I do know that the screw drive is made of hardened metal - I don't know if it is lead or not, but the motor will wear out before the screw/nut. It has been in our employ since we got our flock and we have have zero quality issues with it. Super secure.I is nice that it has a screw drive but using a Regular nut and just all thread is a show of poor quality. A proper Lead Screw and Nut would be a show of a better quality product.