These high-quality holesaws are the right tool for cutting bulkhead holes through wood, plastics, etc. They will cut fiberglass but dull rapidly. Expect about ten holes in 1/4" fiberglass before replacement. They cut to a depth of 1 1/4". Made in USA.
These bulkheas must be used with arbors. Order arbor HSA1 with the 1 1/8" holesaw (HS20). Order arbor HSA2 with all other holesaws.
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