The Banana Wrench Shackle Buster is the most economical choice in flat tools.  Our Monkeys have specifically designed this tool for the working technicians. 

• A lanyard hole large enough for a normal carabiner 
• Stepped opening for all SPA shackles pin sizes and bolts 7/9/12/14/16mm 1/4, 3/8, 1/2SAE HEX or Square Heads
• 1/4in Hex for any screwdriver bit 
• Flat head screwdriver tip for those pesky back cap screws
• Bottle opener of course
• Approximate dimensions: 4.5" long x 2" wide x 0.25" thick
• All of this in a convenient ergonomic shape that's small enough to fit on your Key Ring!!