Eyech 3 Sets 3pcs Magnetic Square Head Bits Square Screw Drive Bit Set 1/4-Inch Shank Square Tip Bit Square Head Screwdriver Bits SQ1 SQ2 SQ3 2 Inch Length : Amazon.co.uk: DIY &
9Pcs Square Head Screwdriver Drill Power Bit 3 Set of SQ1 SQ2 SQ3 1/4-Inch Shank Magnetic Square Head Screwdriver Bits Electric Driver Bits Hand Tools : Amazon.co.uk: DIY & Tools
Trend SNAP/SQ/2A Snappy R2 Square Drive Screwdriver Bit - Machine Mart - Machine Mart
3 Square Drive Bit X 1 inch Long
Simpson Strong-Tie BIT3SU-RC3 #3 Undersized Square Driver Bit (3/Pack)