Product name: Countersink drill bit set for wood Product material: cutter head YG8 alloy, cutter body 45# carbon steel, surface sprayed Product color: orange, stainless steel color Product Usage: For Wood, Pilot Screw Hole Set Product Packaging: Contains 5 Pcs 5/16" Shanks, 5 Pcs Countersunk Drill Bits With Wood Depth Limiter And 5 pcs Allen Wrenches