The metric tap set is used to process internal thread, while the metric die set is for external thread. Perfect to create new threads or repair damaged threads on plastic, aluminium. A great tool for home, garage mechanic, backyard. Features: x Steel construction is highly durable and built to last for multiple uses x Equipped in durable case for easy identification, storage and portability for all on the go jobs x Perfect for creating new threads or repair damaged threads on most metals x Ideal for rethreading fasteners, fastener holes for auto and machinery repair. Specification: Color: Silver Material: Alloy Steel Wrench Length: 20.5cm/8.26inch Screw Die Stock Size: M3x0.5, M4x0.7, M5x0.8, M6x1.0, M7x1.0,M8x1.25, M9x1.25, M10x1.5, M12x1.75 Thread Tap Stock Size: M3x0.5, M4x0.7, M5x0.8, M6x1.0, M7x1.0,M8x1.25, M9x1.25, M10x1.5, M12x1.75 Package List: 1 x Adjustable Tap Wrench 1/2(M3M12) 1 x Adjustable Die Wrench M25 9 x Screw Dies Stock 9 x Thread Tap Stock