BGS 4266 | Bit Socket | length 100 mm | 12.5 mm (1/2") Drive | internal Hexagon 11 mm

It is only the first 13mm that is actually 11mm, the rest of the shaft is 12mm. So unfortunalty, this tool isn't suitable for what I wanted to use it for which remove the freehub on my bikes back wheel as the 12mm shaft will not fit through the centre hole of the bearing. Also the 100mm dimention referes to the overal length including the driver. The actual shaft is 62mm long. The 10mm version might work, but that is only an assumption the the as the shaft size isn't specified.

'It does exactly what it says on the tin. 'I was doing a brake pad change on my Audi A7 which had the ATE 2 Piston system which requires a special size align head, a 9mm with extra reach as described in the workshop manual. 9mm heads are not included in most toolkits.I have also found out that some BMWs and Mercedes-Benz models also use a similar ATE Brake system, which require the same bit size.This BGS tool is excellent quality. I had to use a lot of force with my caliper bolts as they were seized and the bit is still intact and not deformed at all unlike other cheaper brands.This is a must have bit in your toolbox.

Did a set of brakes. Well started. Had to get this to finish.

Does what it says and resolved issue I had

Good quality