Socket bits, triple square, double hex and spline

[senna007]

Ok so i have a strange bolt i need to remove, and after a bit of looking around on the internet i think it requires either a triple square, double hex or spline socket bit to do so. My question is, these all look the same to me is there a difference between the three or is it just a case of different manufacturers giving them different names? How can i tell which one i need if they are all different?

Thankls in advance

 

[footprints]

Mole grips!

Seriously though, a photo would help people in identifying it.

 

[foxhole]

The gator grip socket will fit some odd shapes, not very strong but ok for the odd use.
http://www.ebay.co.uk/itm/like/3308...ff11=ICEP3.0.0&ff12=67&ff13=80&ff14=95&ff19=0

 

[senna007]

I will try and get a photo uploaded when i get home

 

[jj4091]

Scroll down to the part about sockets http://en.wikipedia.org/wiki/Socket_wrench

 

[Nigel_Cro]

I have often wondered what the difference is between Phillips and PoziDrive - if indeed there is any....

 

[footprints]

Posidrive have an extra 4 contact points between the main blades.

 

[senna007]

Thanks for all the responses i have now sorted the problem after borrowing a friends socket bit set.

 

[AlanE]

Posidrive have an extra 4 contact points between the main blades.

They are also a different profile.

Guaranteed way to damage a tight Phillips screw is to use a Posidrive bit. Likewise a tight posidrive screw will be damaged by using a Phillips bit.

 

[misterhelpful]

Guaranteed way to damage a tight Phillips screw is to use a Posidrive bit. Likewise a tight posidrive screw will be damaged by using a Phillips bit.

...and it's also a good way to damage a cheap screwdriver/bit!