Hi all.
So I buy a ground anchor after about 5 years (yeah yeah), I dig out my BIG drill bits. It’s not big enough.
Does anyone have a (looks like I need a 16mm?!) masonary bit? A 15 might do. I need it for about 10 seconds to make my pilots bigger.
NB I have not used these bolts before so if someone wants to correct me then great news 
it’s an M10 expanding bolt. (I thought that would be the hole size but my backup vernier tells me otherwise. How embarrassing).
Should be one in the box in the back
Measure the other end, usually that piece you have the vernier on sticks out and the other end goes in the hole and expands.
15 or 16 is right for M10 depending on manufacturer and the wall
Thank you both!
Ill have a dig for the bits at the back of the woodwork drill bit area(?) when I pop in, leave an IOU for 24 hours 
Free tea for everyone!
If you cant find one I’ve got one in my van
I’ve got a 16mm SDS which I used for fitting the concrete anchor for locking up my scooter. It looks the same…I will leave it in the top right pigeon hole in the metal workshop rack (tucked aside). Please leave it there again when you’re done.
Wow - all - @alanmakestuff and @Howard for your kind offers.
There was not a bit in the space so I ordered one to close the job.
Thank you so much! Lesson learned - check tools before parts arrive
