The easiest and fastest way to hand deburr aluminum material. The kit contains 6 multi-purpose tools for deburring and chamfering a wide range of aluminum works. Kit contains: Aluminum handle F holder F12 Inner Countersink for chamfering hole edges up to 12mm (0.47") in diameter MB2000 handle E200 replaceable blade for clockwise & counterclockwise deburring E300 replaceable blade for simultaneous inner and outer deburring.Vargus