Ball - pein hammer with plastic handle in below spec 

high carbon steel head impact resistance

used for hammer workpiece,metal shape,crush steel chisel etc

package:1pc/opp bag

While the ball pein hammer comes in an assortment of head sizes, I use a 2-1/2 inch head with a 3/4 inch flat face and a smooth nicely rounded ball. It's a 4 ounce size (head only) and has a nice long solid hickory handle that is tapered at the neck to allow the hammer to have a whipping action. The flexibility of the handle allows the hammer to do most of the work for you and is very comfortable in the hand. I've included a photo of the hammer. They typically sell in the $12-25 range.

a flat face instead of a slightly domed face. The actual striking area of a domed face is smack-dab in the center of the face. That domed face is great for moving metal in some applications, but for texturing and flattening wire, you have to get too close to your fingers to actually make contact with the metal and the area you're trying to work on is hidden by the face of the hammer.