SDS impact drill for drilling holes in 4" thick concrete blocks. When I was halfway through the fifth hole the tips were dull and it would not move forward. At $1.50 an inch of material this allows me to drilling a hole, it's not worth the money.
Pros
โฎ 3.75 Variable Pitch Hole Saw for fast, smooth cutting and longer hole saw life, chip holes make it easy to remove dowels.