Allows for easy and accurate 1-person siding installations * The gauge acts like an extra pair of hands to prop up one end of the plank * Set includes 1 facing gauge and 1 overlap gauge * Durable nylon facing gauge adjusts to 5, 6, 7, and 8-inch exposures without tools * No adjustments to vary and nothing to mark * Made in the USA * Will not mar finish of pre-painted siding