Worked as expected
We use these a lot for sewer type work and the guys love them
#57 HSS Black Oxide Jobber Length Drill Bit, D/AN Series
A dependable, general purpose high speed steel drill bit ideal for production, maintenance or portable drilling jobs. They are for use in a wide range of materials such as aluminum, brass, copper, metal, plastic and wood. They are surface treated with abrasion-resistant black oxide and made of high speed steel with a 118° conventional point. These drill bits are jobber (standard) length with a round shank for use in a wide range of tool holding systems.