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Spectra Precision LL300N Laser Level, Self Leveling Kit with HL450 Receiver, Clamp, Alkaline Batteries Black - Standard Levels - Amazon.com
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Spectra Precision LL500 Self-Leveling Laser Level with HL700 Receiver, C70 Rod Clamp, Alkaline Batteries, Carry Case, Yellow - Rotary Lasers - Amazon.com
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