4 Piece Adjustable Tap & Reamer Wrench Set ~ Includes sizes #0, #1-1/2, #3 & #4. ~ Knurled steel handles. ~ Jaws are surface hardened. ~ Zinc die casting. Includes sizes #0, #1-1/2, #3 & #4. Knurled steel handles. Jaws surface hardened. Zinc die casting.