thats not for making holes thats for enlarging holes in lexan/polycarbonate.
what they do is drill a hole a size smaller than what you need and then use this tool to enlarge the hole and keep it round in doing so. drill bits dont put round holes in plastics and thend to bind which is why this product was copied from a tool used in metallic reloading equiptment. point in case those hss bits are just general purpose bits. they they do actually have a special bit for plastic.
plastic drill bit: http://www.eplastics.com/Plastic/Plastic_Drill_Bits
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