No 17 Teks Screw

These self driving screws have revolutionised construction and DIY industries, this is a No 17 with which I attached my roofing iron some 20 years ago when I was extending our family home.

The way I feel now I also think that they are a staple in orthopaedic surgery at least I feel that I have one in my knee joint. Had my stitches out nice union no infections and bikini line intact. I still feel a bit ginger (Australian for a bit sore) so I am staying close to home and do some macros.
Once again tanhx for you kind wishes.