Product Description Features: 6 Piece Long Series Black Drill Set ANSI B94-11 118º chisel point with 30º helix Chisel point is suitable for general purpose drilling Black Finish Twist Drills (also called blue finish) achieve their distinctive colour by steam tempering, a thermal process resulting in a porous tool coating This surface helps to keep lubricant on the tool, particularly important on the cutting edges, thus reducing friction and cold welding. The result is increased tool life Black finish tools are generally recommended for ferrous applications where the oxide layer aids chip flow and heat dissipation Specifications: Part Number: 2501-S1 Brand: Bordo Group Code: LONG Barcode: 9326518181255 Pack Qty: 6 Pack Type: Hang Sell Packaging: Twist Pack Components: 2501-3.00 – 3mm HSS Long Series Drill 2501-4.00 – 4mm HSS Long Series Drill 2501-5.00 – 5mm HSS Long Series Drill 2501-6.00 – 6mm HSS Long Series Drill 2501-8.00 – 8mm HSS Long Series Drill 2501-10.00 – 10mm HSS Long Series Drill UPC: 9326518181255 Enquiry Tell A Friend