IRWIN Unibit 3/8-in 13-Step Drill Bit Bagged Marble Chips A: The sockets are forged

IRWIN Unibit 3 8 in 13 Step Drill Bit Bagged Marble Chips A: The sockets are forged A: The sockets are forged from impact grade Cr Mo steel for maximum strength and durability Wireless speakers Power Type Battery Powered Low Frequency Response (Hz) 80 Color Finish Black Wired or Wireless Wireless Speaker Style Party Returnable 180 Day High Frequency Response (kHz) 16 Electronics Included Components AC Adaptor Charger Product Height (in Sub Brand Unibit Brand Model Compatibility Universal Number of Hole Sizes 12 Diameters of Holes Drilled 1 8 in to 1 2 in Step Size 1 8 in Shank Size 3 8 in Shank Type Hex Material Black oxide coated HSS Set Individual Set Package Quantity 3 Warranty None CA Residents: Prop 65 Warning(s) Yes Single fluted cutting edge for greater control and rounder holes Ideal for drilling holes in thin materials such as mild steel