3-Piece HSS Step Reamer Set – USA Made

3-Piece DBW HSS Hole Expansion Step Reamer Set New from DrillBitWarehouse Built specifically for enlarging existing holes, this professional 3-Piece Hole Expansion Step Reamer Set provides a fast, controlled way to open up and deburr holes in steel and other metals. Unlike a standard drill bit, the stepped cutting design progressively enlarges an existing hole. Each reamer features five enlargement steps, giving the complete set a working range from 5/16″ through 1-1/16″. The 90° notch point is designed to engage existing holes, while the 3/8″ shank with three flats provides a secure grip in the drill chuck and helps prevent slipping under load. Manufactured from High Speed Steel (HSS) and treated with a Gold Oxide finish, these reamers are built for demanding metalworking, fabrication, maintenance and repair applications. The Gold Oxide treatment improves lubricity and helps reduce friction during cutting. Designed for use in material up to 1/2″ thick. Set Includes Reamer Hole Expansion Range Steps Small 5/16″ – 9/16″ 5 Medium 9/16″ – 13/16″ 5 Large 13/16″ – 1-1/16″ 5 Key Features Professional 3-piece hole expansion step reamer set High Speed Steel construction Gold Oxide treated Overall range from 5/16″ through 1-1/16″ Five enlargement steps per reamer Designed to enlarge and deburr existing holes 90° notch point 3/8″ shank on all three reamers Three-flat shanks for improved drill chuck grip 1/2″ step thickness Designed for material up to 1/2″ thick Snap-lock storage case Ideal for fabrication, maintenance, automotive and equipment repair Manufactured in the USA   Specifications Manufacturer Part #: 83750 Series: Type 78-GR Product Type: Hole Expansion Step Reamer Set Pieces: 3 Material: High Speed Steel (HSS) Finish: Gold Oxide Overall Range: 5/16″ – 1-1/16″ Steps Per Reamer: 5 Shank Diameter: 3/8″ Shank Style: Three-Flat Step Thickness: 1/2″ Point Style: 90° Notch Point Maximum Material Thickness: 1/2″ MADE IN THE USA