1/4" Dia, 1/8" Pilot Hole. Made of High Speed Steel. Requires AT404 series pilot.

1/2" Dia, 3/16" Pilot Hole. Made of High Speed Steel. Requires AT404 series pilot.

5/8" Dia, 5/16" Pilot Hole. Made of High Speed Steel. Requires AT404 series pilot.

3/4" Dia, 5/16" Pilot Hole. Made of High Speed Steel. Requires AT404 series pilot.

3/32" Dia., (For AT402 & AT403)

Spring back dimple dies are precision CNC machined from aircraft quality heat treatable stainless steel & heat treated to Rockwell C42/46 (tensile 190,000 psi). Spring back angles on both dies make a superior dimple.

Male dimple die is modified for use in the RV-14 build.

7/16" (0.4375) diameter, 4-1/2" Flute Length. Zero-degree rake, a 90-degree point, and parabolic cutting flutes to drill through Plexiglas, and acrylic plastics without binding or "breaking out."

3/8" (0.3750) diameter, 3-5/8" Flute Length. Zero-degree rake, a 90-degree point, and parabolic cutting flutes to drill through Plexiglas, and acrylic plastics without binding or "breaking out."

1/2" (0.5000) diameter, 4-1/2" Flute Length. Zero-degree rake, a 90-degree point, and parabolic cutting flutes to drill through Plexiglas, and acrylic plastics without binding or "breaking out."

Use with SCOTCH-BRITE hand pads. Size is 3-1/2" wide by 4-3/4" long

#23 (0.1540), Cobalt, 135 degree split point, jobbers length. Overall length 3-1/8". Pack of 12 each.