Powernail 4-pound White Rubber Mallet for Floor Nailers and Staplers. The choice of mallet can make a big difference in the installation of your floor. The Powernail 5MI, approximately 4 lbs. with rubber cap and malleable iron wedge, is the perfect weight and size to compliment our Powernail models 45, 45R, 101, 101R manual nailers. All of our mallets have American hickory handles designed to feel comfortable immediately and remain so as it wears into your grip. The 5MI comes with the white rubber no-mar cap and an epoxied iron wedge head combination. Our mallets are made in the USA. The handles have been drilled for a firmer grip and better control.