This Combo Pack comes with 3 saw blades for the Fein Multimaster. The 127 Blade is a 2-1/2 Precision E-Cut Blade. The Precision Cut Blade has a Japanese coarse tooth configuration for making agressive, fast cuts and is designed to be used on wood, plaster, drywall, and other soft materials. The 133 Blade is a 1-3/8 Standard E-Cut Blade. The Standard E-Cut Blades have a Japanese pull-saw tooth pattern for making rapid plunge cuts and can also be used on softer materials. The 152 Blade is a 2 Unviersal E-Cut Blade. The Universal E-Cut Blades have a bi-metal construction and a tooth pattern similar to a standard hand-held hacksaw blade. They can be used on wood, plaster, drywall, plastic, and metal up to 1/32 thick. All of the E-Cut Blades are designed to make flush cuts with your material of choice. You can cut almost as fast as a jigsaw or reciprocating saw without sacrificing precision.