Brake replacement help

I have a 2003 Caravan and I'm attempting to replace the front pads on it, but I ran into a problem. I don't know what size socket to use to remove the calipers. It seems to take a small six-sided socket which I don't have. Can someone please tell me what size socket that is. Thanks.

A TORX bit fits that six sided socket. I can't remember the size, but its either a T35, T40, or T45. Hardware stores sell Torx sets with the popular sizes for doing brakes.

I went to a local auto parts and bought a T45 torx bit. It worked like a charm. I changed the front brakes in under an hour. Thanks for your help yogi123rd.