SE 1.25" High Speed Saw Blade with Mandrel Endurance blade offers faster cutting and extra long life for hobbyist. A hardened alloy steel body is used to ensure straight, accurate cuts. The features add up to a good quality blade that hobbyist can depend on, time and time again. Technical Details - 1.25" Diameter - Arbor/mandrel = 1/8" shank with 1/4" screw - Coarse Tooth - Qualtiy High Speed Steel http://www.accessories.bestlowprice001.com/Buy-SE_1_25_High_Speed_Saw_Blade_with_Mandrel-B000TBUMG2.html