Features The PROTO® ball pein hammer features one crowned striking face with beveled edges and one spherical striking face. Use a hammer for bending and forming sheet metal, driving punches and chisels, and setting rivets. Type / Ball Pein Head Weight (Oz.) / 16.0 Handle / Wood Head Weight (Lb.) / 1 Overall Length (In.) / 14 1/2 in Tether Style / Tether Capable Head Dia. (In.) / 1 1/4 in Head Material / Steel Meets/Exceeds / ASME