Epidural needle. Generally its a 3.5 inch to 5inch needle. Generally speaking it can be 20g to 25g needle. Hard to say more since every doc uses different types of needles.
Special bevel. An epidural needle is designed to enter what is considered the epidural space. There is a very slight curved bevel to allow the needle to enter this space without puncturing the dura (the tubular structure holding the spinal fluid and nerve rootlets). The needle is of a guage (thickness) that can also allow a catheter to be placed for the infusion of medication.
Yes. They are long, hollow needles with a curved tip.