Dagger Tools ET724 Auto Body Wire Bead Edging Dolly is used to aid in closing the auto body panel tipped panel edge around the wire for a closed beaded edge. The dolly is 2 1/2" wide X 4" long X 5/8" thick. Is cast construction, hardened and has approx. a 40° angled faces one flat and one radius. Can also be easily cut into small segments for access in tighter form areas. Use with a traditional crowned auto body hammer, panel beater or a soften face panel beater (to control stretching of the panel lip), 1 1/2 or 2" diameter redhead plastic barrell/bossing mallet, after the wire edge has been tipped up with a tipping wheel or similar method. Using our DSEF250 Wire Bead Edging Plier as this point allows you to uniformly draw the tipped panel edge around the inserted wire to finalize fitting.