The blade has 20 teeth per inch. It is carbon steel and can be sharpened with a thin file. It can be replaced as well. This would be usefull for small wooden cuts or cutting soft metals in jewellery. Most hack saws acailable in the market bend and flex while cutting. The rigid spine on this will keep the cuts straight.
Replacement blades can be made using serrated blades available in the market.
The cost includes shipping with tracking. I use shiprocket with B2C couriers.