24″ Extension Adapter for Core Drill Bits, 1-1/4″-7 Male to 1-1/4″-7 Female. Heat-Treated Steel with high Strength for Longer Durability.
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About this item INDUSTRIAL GRADE – heat treated industrial grade steel extends lifetime EXTENSION – 24″ extension fits on to core bits COMPATIBILITY – 1-1/4″-7 male to 1-1/4″-7 female ROTARY MODE – rotary mode is recommended with core bits and extension Heat-treated steel with high strength for longer durability.


