Hand-held bags are great for backing up metal when removing or working out dings with body hammers. Can also be used when forming or shaping small metal pieces with metal-forming mallets. Made of 5 to 6 oz leather and double-stitched with heavy-duty thread. Bag has 1" hole on one side with hook and loop for filling and refilling. Fill with "Pro-Fill" Beater Bag Material. Made in USA.