uxcell 5/16" Hex Shank Magnetic PH4 Phillips Screwdriver Bits Brown 20pcs Main Material: Metal; Package Content: 20 x Phillips Screwdriver Bit; Product Name: Phillips Screwdriver Bit Weight: 284g; Main Color: Brown; Drive Type: Phillips Features: Magnetic; Head Size: 8mm/0.3" Battery Included: No; Head Type: PH4 Total Length: 38mm/1.5"; Hex Shank Diameter: 8mm/5/16"