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2x1 in. Double-Square-Driver Bit
MulWark Robertson Square Allen Wrench Drill Bits Set 10PC Screwdriver Bit Set, 2.3" Long 1/4" Diameter Quick Release Shank Magnetic Square Drive Bit Set for Assembling Furniture - Amazon.com
10 Pcs SQ2 Screwdriver Bit Square Screws Driver Bit Washer Head Drill Bit Square Head 150mm Alloy Steel Screwdriver Bit - AliExpress
Power Drill Sockets Adapter Sets, Rotatable Universal Joint Swivel Socket Set, Impact Square Drive Adaptor Screwdriver Drill Bit - Temu
Apex Frearson Bit 832-F | 3/8" Female Square Drive | Made in the USA
4Pcs Square Drive Sockets - Quick Release Change 1/2-Inch Square Drive to 1/4-Inch Hex Female Screwdriver Drill Bit Socket Converter Chuck Adapters for Air and Electric Impact Wrenches - Yahoo Shopping