Hello :wave:from Australia. My name is Dave I am new to the forum I just signed up and noticed this thread. I was wondering about this bloke myself and last week I emailed some of his customers from his feedback the response I got from all 4 which were all in the US I think was they were great no problems good looking product.He has told me they are P7 grade .050/300mm metric or .002/12 inch.I ordered 3.3mtr's (2x1350 1x600)of 2505 and 8 ballnuts the cost was $496US which was $630AU dollars posted, cheaper than anybody over here.The quote that I have from local supliers is around $1800 dollars ($200 per mtr ballscrew and $120 per nut plus postage).I ordered them 2 days ago so I will see what there like when they turn up and let you know.
Dave