I bought this module new and soldered on header pins before realizing it didn't have a back light. It is in perfect condition. Still has protective plastic on the screen.
Up to 13 different hole sizes without changing bits Applications Specialty step drill designed to machine a large number of different hole diameters with a single tool. Single cutting edge creates perfectly round holes in metal, plastic, and wood without center punching. Conical design permits as many as 13 different size holes to be drilled with one drill.
#4M UNIBIT STEP DRILL Uncoated Or TiN Coated • Ground From The Solid Applications Specialty step drill designed to machine a large number of different hole diameters with a single tool. Single cutting edge creates perfectly round holes in metal, plastic, and wood without center punching. Conical design permits as many as 13 different size holes to be drilled with one drill.
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