DURABLE: This 6 piece tap wrench set is made from heavy duty, heat treated alloy steel for durability. VERSATILE: With a T-handle for leverage and a sure-grip chuck, it includes a useful assortment of metric taps. SIZES: The set includes sizes M5 x 0.8, M6 x 1.0, M7 x 1.0, M8 x 1.25, M10 x 1.5.