Irwin 10502486 Long Pro Drill Bit 4.0mm x 120mmThis is a 4.0mm HSS Long Pro Drill Bit from Irwin. It is designed for drilling applications requiring extended reach. The bit features a 120mm total length.Features High-Speed Steel (HSS) construction Long Pro design for extended reachSpecifications Brand: Irwin MPN: 10502486 EAN: 5709131041962 Diameter: 4.0mm Total length: 120mm Working length: 80mm