If you're currently looking to install a kitchen need to cut through your countertop and sink, jigsaws are the ideal tools for the task. They offer higher mobility and allow you to make curved cut-outs in these kinds of projects. While there are lots of blades on the market, the blade to use for this sort of application is a cutting blade that is laminate.
While buying a pack of blades, you should have a look at a special down-cutting laminate blade with approximately eight teeth per inch. These blades are made from flexible, durable metallic alloys like bi-metal or high carbon steel, providing versatility and strength. They are also manufactured to cut on the stroke, letting you cut through the countertop without needing to worry about chipping the surface.