HUMMINBIRD HELIX 5 7 8 9 10 12 Series Operations User Manual, TOUGH WIRE BINDING
The Ultimate Humminbird HUMMINBIRD-HELIX-5-7-8-9-10-12-SERIES-OPERATIONS User Manual Owners Instruction Guide. binding lets pages lay flat, fold back, and stay put. No flopping around, no cracking, just pure durability.