5pcs HSS Large Cobalt Hole Step Drill Bit Set Titanium Saw Cone Cutter Tools

Description

Features:
100% Brand New and High Quality
This set replaces 50 individual drill sets.
Self starting - no need for a pilot hole.
Cobalt coated to reduce friction and run cooler.
Automatically deburrs holes as you drill.
Specifications:
Material: HSS 4241 (Suitable for below 25 °artifacts, such as carbon steel, iron, steel, plastic, wood)
Surface: Baking yellow + nitriding
Size: 1/4'' to 1 3/8'' Drill Bit: 10 Steps (1/4'', 3/8 ” , 1/2'', 5/8'', 3/4'', 7/8'', 1'', 1 1/8'', 1 1/4'', 1 3/8'').
3/16'' to 7/8'' Drill Bit: 12 Steps (3/16'', 1/4'', 5/16'', 3/8'', 7/16'', 1/2'', 9/16'', 5/8'', 11/16'', 3/4'', 13/16'', 7/8'').
1/4'' to 3/4'' Drill Bit: 9 Steps (1/4'', 5/16'', 3/8'', 7/16'', 1/2'', 9/16'', 5/8'', 11/16'', 3/4'').
1/8'' to 1/2'' Drill Bit: 13 Steps (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'').
3/16'' to 1/2'' Drill Bit: 6 Steps (3/16'', 1/4'', 5/16'', 3/8'', 7/16'', 1/2'')
Package included:
5 x Step Drill Bits
1 x Case
Note:
Please allow 1-5cm difference due to manual measurement.
Due to light and screen difference, the item's color may be slightly different from the pictures.