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Each extension is designed for a specific tap size, and the tapered square and round socket conform to the size standards of leading tap manufacturers.
Because the Tap Extension has no set screws or collars which extend shaft diameter, and because each extension is sized for a particular tap size, it offers unique capabilities in allowing the user to tap close to the edge or shoulder of the workpiece.
Tap is held by internal tapered square. Simply tapping into extension with small rubber hammer is enough for positive drive. Supplied drift key is used for removing tap from extension.
