5PC SAE Step Drill Bit Set | ATD-9200 ATD Tools

Specifications: #4241 High Speed Steel is perfect for drilling holes in thin mild steel, aluminum, copper, brass, plexiglass, wood and laminates Two flutes design for true round holes and automatically deburrs as you drill Tri-flat shank design for sure grip in chuck without slippage Set Includes: 1/4" Shank: 1/8" to 1/2" holes in 1/32" steps 1/4" Shank: 3/16" to 1/2" holes in 1/16" steps 3/8" Shank: 1/4" to 3/4" holes in 1/16" steps 3/8" Shank: 3/16" to 7/8" holes in 1/16" steps 3/8" Shank: 1/4" to 1-3/8" holes in 1/8" steps