Gripping Range - 1/8-3/4(1/8, 1/4, 3/8, 1/2, 5/8, 3/4).
High accuracy - Accuracy ground and the accuracy is 0.015 mm( 0.0006 ).
Material - Made of high grade specially formulated spring steel, first class 1065 carbon steel, durable and sturdy.
Clever design - Built in self-Release design and tools will never get stuck in holder.
Application - Perfect for CNC milling lathe tool and work-holding engraving machine.