The Senco Square drill bits are replacement parts and are made from heat treated tool steel for extended bit life. They are designed to fit precisely in Senco DuraSpin screws for optimal performance. The Square bit engages smoothly and accurately for high speed applications.
Designed to fit DS440-AC， DS425-AC
#2 square drive
2-pack
Drives 1-3 in. screws
Carbide steel
Long life and durable
Works with all Senco square drive screws
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