Round Carbide Bit size

[pops92]

As anyone purchased these particular bits shown in the photo. Most are 4.5 thickness and 5mm hole. These are 2.5mm thickness which I am looking for. However seller cannot give me size of hole as they are in good old China.
As anyone purchased these off Ebay and know the hole size. :?:

 

[Skeety]

Hi,

The 12mmx2.5mm one I just bought accept an M4 x 8 CSK machine screw. Will need a few more screws as the other cutters came with no screw as they were from a different supplier. Will let you know what the nut and bolt specialist say

Cheers,

Jon.

 

[pops92]

Thanks for that I am now sorted with some 12mm x 2.5mm with a 4.29mm hole in them. Same as the ones I have been using.