These are Socket Head Sheet Metal Screws by DU-BRO. FEATURES: Steel construction. Coarse threads designed to grab onto relatively thin sheet metal. Cap head with a hex drive insert. Uses a 7/64" ball driver (BONR1025). INCLUDES: (8) Screws SPECS: Length: 3/4" (19mm) Diameter: 6mm kr3/23/05 ir/jxs BOX DIMENSIONS: 2.25" W. X .50" H. X 2.25" L. BOX WEIGHT: .03 LBS.