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Crown Bees Mason Bee Holes, Guard Tube and Insert
100% recyclable paper with no damaging plastic that retains moisture
Innovative end cap viewing hole to identify used tubes
Guard tube is perfect size for nesting mason bees with inside diameter of 5/16" (8mm) and 6" length
6-1/8" glassine insert fits snuggly inside guard tube with extra length for easy removal
Each order contains 36 guard tubes and inserts
The guard tube and insert holes are a great way to protect your mason bees from parasitic wasp invasion. This combination uses the Easy Tear tube as a guard tube and the insert as a nesting hole. At fall harvesting of your bees, remove the insert and open it. Reuse the Easy Tear guard tube and replace the inexpensive insert for next season.