30043 Features: -Jig saw blade set.-U shank.-30012 has 6 teeth per inch, 3-5/8" blade length, applicable for fast cuts in wet wood 3/4" and up.-30015 has 13 teeth per inch, 2-3/4" blade length, is applicable for scroll cuts in wood up to 1/8".-30016 has 10 teeth per inch, 3-1/8" blade length is applicable for smooth cuts in wood up to 1-1/4".-5 blades per card. Includes: -Includes one each of 30015, and two each of 30012 and 30016.