At sawsandtools.com we offer two types of blades, hobbyist and professional. Hobbyist blades are made for the amateur woodworker who uses a blade no more than one to two hours a day. Our professional grade blades are designed for continuous use eight hours a day or more. If you are unsure of what your needs dictate, don't hesitate to email info@sawsandtools.comand we can recommend the right blade for you.