General-purpose tap wrenches designed for tapping and reaming. Features a solid jaw design and a heavy knurled cap for a secure grip. Supplied in a pouch. Includes three wrenches with maximum square sizes of 3.9mm, 5mm, and 7mm, suitable for chuck diameters of 1.5-4mm, 4-6.5mm, and 6.5-13mm. Backed by a lifetime guarantee.