Features:

• One-person installation - working as a pair, the gecko gauge fiber cement siding tool supports fiber cement siding for one-person installation with virtually no layout time
• Use with fiber-cement siding - use the sa903 gecko gauge siding tool with 5/16 in fiber-cement siding, including James Hardie's updated hz5 seriesADJUSTABLE - each gauge is adjustable at 1/4 in increments for 4 in-8 in siding reveals
• Patented friction-cam mechanism - supports full 12' fiber cement siding lengths