Compatible with Duraspin models: DS320, DS440-AC, and DS425-AC (Tools Sold Separately) Included (4) Pack of Senco EA0315 Duraspin Drive Bits (2) #2 Square Duraspin Bits Per Package Bits Measure Approximately at 9 Inches Long Genuine Senco Replacement Part Made with Carbide Steel to Hold up in Demanding Applications ›See more product details