Amazon.com: (2-Pack) 1/4 & 5/16 x 2" Reversible Dual-Sided Hex Chuck Driver - MSHC : Tools & Home Improvement
Products | T1836, Malco, Malco MSHC 2-in Dual-Sided Reversible Magnetic Hex Chuck Nut Driver (1/4 in and 5/16 in): Tools, Hand Tools, Fastening Hand Tools
Amazon.com: DEWALT Magnetic MAX IMPACT Double Ended Carbon Steel Nut Driver (2-Pack) which includes 1/4 to 5/16 and the 3/8 to 7/16 Nut Drivers for a 1/4'' Impact Driver, (DWADNDMI2) : Tools & Home Improvement
Malco 3/8" & 5/16" Reversible Nut Driver Bit Cartridge
CONNEXT® – Magnetic Hex Hand Drivers - Malco Tools