- Heat Treated- Universal 1/4" Shank- For Working, Plywood, Wall Board, Hard Metals or Wood with Nails or MasonrySizes: 2 Each- 1/4" Shank- 2-3/4" x 14 TPI: Scrolling- 2-1/8" x 8 TPI: Scrolling- 3-1/2" x 6 TPI: Fast Cut- 4"