BSW 1/8" 5/32" 3/16" 1/4" 5/16"Hex Socket Cap Screw High Tensile 12.9 Allen Bolt | eBay
CASOMAN 18 Pieces 3/8 Inch Drive Long Hex Bit Socket Set,1/8 Inch to 3/8 Inch, 3mm to 10mm, SAE&Metric, Extra Long Allen Hex Bit Socket Set, CR-V and S2 Steel : Amazon.co.uk:
Teng M381106 S2 3/16-inch/ 3/8-inch Hex Socket Bit Drive : Amazon.co.uk: DIY & Tools
BSF 3/16" Socket Set Screw Grub Plain Cup End HT 14.9 – Fixaball Ltd. Fixings and Fasteners UK
Stahlwille 01640012 3/16" x 1/4" Deep Bi-Hex Socket
TEKTON 1/4 in. Drive x 3/16 in. Hex Bit Socket SHB02203 - The Home Depot
Extra Long Allen Wrench Hex Bit Socket Set (10 Pack) - Long 6" Hex Bit in 3/8" Drive Sizes: 1/16", 1/8", 5/32", 3/16", 7/32", 1/4", 5/16", 3/8", 7/16", 1/2" : Amazon.co.uk: DIY