Senco EA0299 Rex Drive Bits - Duraspin Technology Integrated Auto-Feed Screw System (2 - 2 Packs) Compatible with Duraspin models: DS212-18V, DS215-18V, DS232-AC and DS235-AC Measures approximately 7 Inches Long Genuine Senco Replacement Part Made with Steel to Hold up in Demanding Applications (2) Rex Drive Duraspin Bits Per Package