230 Pieces Titanium Twist Drill Bit Set, 135° Tip High Speed Steel, Size from 3/64" up to 1/2", Ideal Drilling in Wood/Cast Iron/Aluminum Alloy/Plastic/Fiberglass, with Hard Storage - Jiangsu Sainty Sumex Tools Corp Ltd, YL-JQYI-K6YM

• Premium Material: Manufactured from high speed steel for strength and durability Storage: Supplied in a plastic storage box for easy storage and transportation Widely Used: The 135° fast cutting point is automatically centered and penetrates quickly with less pressure,The drill kit meets all your requirements, including all common size specifications for Wood/Cast Iron/Aluminum Alloy/Plastic/Fiberglass Process Treatment: Titanium coated surface prevent rusting,which increase the hardness of the drill bit and reduces heat buildup, make the twist drill bit more wear-resisting for longer life Size Includes: 32 pcs 3/64",30 pcs 1/16",30 pcs 5/64",30 pcs 3/32",20 pcs 1/8",20 pcs 9/64",12 pcs 5/32",12 pcs 11/64",12 pcs 3/16",8 pcs 7/32",4 pcs 15/64",6 pcs 1/4",4 pcs 9/32",2 pcs 19/64",3 pcs 5/16",2 pcs 21/64",1 pcs 23/64",1 pcs 3/8",1 pcs 1/2"