Remember when you powered through metal with ease? The WEN Two-Flute High Speed Steel End Mills help make easy work out of a range of metals. This set of imperial bits ranges in size from 1 8 to 5 8 of an inch. All you need is a set of compatible R8 collets, and you re ready to mill. Two-flute design makes easy work out of the toughest materials. Compatible with the WEN 33013 Metal Milling Machine and the WEN 33182A 8-Piece Collet Set. Each of the 8 bits comes prepackaged in a resealable case, keeping them protected and sharp between uses. End mill sizes include one 1 8-inch, one 3 16-inch, one 1 4 inch, one 5 16-inch, one 3 8-inch, one 1 2-inch, one 9 16-inch, and one 5 8-inch HSS end mill. Remember when you could take on even the hardest of metals? Remember WEN.