US PRO 16pc 1/2" Dr Impact Hex Allen Key Socket Bit Set – H4 to H19 – 3998. H4, H5, H6, H7, H8, H9, H10, H11, H12, H13, H14, H15, H16, H17, H18, H19. 16 x Impact Hex Allen Bit Sockets (H4 to H19). Durable CR-MO Steel – Forged from Chromium Molybdenum for strength.
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