The Century Drill & Tool 2-pack 14/18T x 9" Metal Series Reciprocating Saw Blade, No. 07898, features a 1/2" universal shank with a 5 percent tilt angle for fast cuts and skid-free starts. With a 1" width and heavy duty blade thickness, its able to cut clean with less vibration in heavy metal cutting applications. Additionally, its bi-metal blade offers cobalt high speed steel teeth and a shatterproof shock absorbing alloy backbone.