Uxcell 5/16" Magnetic Hex Head Screwdriver Bit, 1/4" Hex Shank 2" Length S2 Steel Power Tool, 10 Pack - Walmart.com
K Tool International 18802 Large Slotted Screwdriver Bit 5/16 In Shank KTI18802
GRK Fasteners 5/16 in. x 4 in. Star Drive Round Head Rugged Structural Wood Screw (45-Piece per-Pack) 112225 - The Home Depot
5/16-Inch Magnetic Hex Head Driver Bit w/Quick Change Shank - Used for Installing Screws, Nuts, Bolts, etc. - Commonly Used for Metal Roofing Screws (EACH) - Amazon.com
Tacoma Screw Products | #14 Spanner Driver Bit — 1-1/2" With 5/16" Hex shank