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Hygro-i2® Hole Liners and Caps for use with Tramex Hygro-i2® relative humidity probes. To perform ASTM F2170 in situ RH testing of concrete floors and slabs using a 3/4" drill bit.
Hole liners 3" long - Available in packs of 100.
Hole liners 4.72" Extra long - Available in packs of 50.