Not sure how long this will take The drill bit lasts a long time but was inexpensive and when drilling pilot holes in wood studs for large 3" and 3" and 1/2" screws takes a little longer than usual and works great.
Pros
For use in steel, copper, aluminium, brass, oak, maple, MDF, pine, PVC, polycarbonate, acrylic, ABS, nylon and composites