The GreatNeck® 6 Piece Coping Saw Blade Set- Assorted includes 2 fine, 2 medium, and 2 coarse 6 inch blades made from alloy tool steel for strength and durability. This set fits GreatNeck® and other popular coping saws. Assorted Pack of 6 in. Blades: 2- 12 TPI Fine, 2- 15 TPI Medium, 2- 20 TPI CoarseFits GreatNeck and other common coping sawsAlloy tool steel for strength and durability