UPC 763684165341

• TITANIUM HIGH SPEED STEEL: Suitable for below 25 hardness of the work piece, such as carbon steel, sheet iron, insulation boards, PVC boards, planks, and wood thickness below 5MM
• Quick-change 1/4" hex shank
• TWO-FLUTE DESIGN: made the penetration faster without chipping
• This compact set replaces 28 individual drill bits
• SET INCLUDES: Bit 1 : 3/16", 1/4", 5/16", 3/8", 7/16", 1/2"; Bit 2 : 1/8", 5/32", 3/16", 7/32", 1/4", 9/32", 5/16", 11/32", 3/8", 13/32", 7/16", 15/32", 1/2"; Bit 3 : 1/4", 5/16", 3/8", 7/16", 1/2", 9/16", 5/8", 11/16", 3/4"

About HQMaster , At present, HQMaster branded products only sell on the Amazon platform. And HQMaster is the sole authorized seller of authentic HQMaster products. HQMaster Titanium Step Drill Bit, High Speed Steel HSS Quick Change 1/4" Shank Total 28 Sizes 3-Piece Set Tool for Carbon Steel, Sheet Iron, Insulation Boards, PVC Boards, Planks, and Wood Features: Drill 28 hole sizes. This compact set replaces 28 individual drill bits. Titanium nitride coating for cooler running. Quick-change 1/4" hex shank. High Speed Steel for long service life. They also help to enlarge existing holes. The two flute design tips made the penetration faster without chipping. Application: suitable for below 25 hardness of the work piece, such as carbon steel, sheet iron, insulation boards, PVC boards, planks, and wood thickness below 5MM. Specifications: Material: High speed steel , Sizes of the 3 Step Drill Bits: 6 Step Bit from 3/16" to 1/2": 3/16'', 1/4'', 5/16'', 3/8'', 7/16'', 1/2'' , 9 Step Bit from 1/4" to 3/4": 1/4'' 5/16'', 3/8'', 7/16'', 1/2'', 9/16'', 5/8'', 11/16'', 3/4'' , 13 Step Bit from 1/8" to 1/2": 1/8'', 5/32'', 3/16'', 7/32'', 1/4'', 9/32'', 5/16'', 11/32'', 3/8'', 13/32'', 7/16'', 15/32'', 1/2'' Package included: 3 x Drill Bit , 1 x Plastic Case