Specification Brand : CYTGOUPER BulletPoint1 : HIGH-SPEED STEEL: These long drill bits for wood are made of high-speed steel for high hardness and durability, more abrasion than other metal materials BulletPoint2 : EXTRA LONG LENGTH: Extra long drill bits are 150mm~160mm(about 5.9~6.3 inches long, providing better stability and balance during quick to ensure the position is intact BulletPoint3 : DRILL DEEP HOLES: The long drill bit set (88-100mm) allows you to use these bits to drill deep holes shape tips can make the drilling more effortless BulletPoint4 : 5 SIZE: Our twist extra-long drill bits include 5 sizes in a one-bit set (2mm, 3mm, 3.5mm, 4mm, 5mm), which meet your different needs perfectly BulletPoint5 : WIDE APPLICATION: Extra long drill bit set for fast and smooth cutting of plywood, hardwood, and softwood, fast hole. The long drill bit set is great for most drilling jobs and materials such as aluminum, wood, and plastics. (Note: Not for metal) IncludedComponents : 5 x Drill Bits ItemName : CYTGOUPER 5PCS 150mm-160mm Extra Long Drill Bit Set, High Speed Steel Twist Extra Long Drill Bits for Wood Plastic and Aluminum ItemPackageDimensions_Height : 1 centimeters ItemPackageDimensions_Length : 16 centimeters ItemPackageDimensions_Width : 2 centimeters ItemTypeKeyword : extra-long-drill-bits Manufacturer : CYTGOUPER Material : Alloy Steel ModelNumber : CYTGOUPER034obumndi NumberOfItems : 1 NumberOfPieces : 5 PartNumber : CYTGOUPER034obumndi ProductDescription : Features: Twist drill bits are made from high-speed steel for high hardness and durability. This set includes 5 pieces drill bit in different sizes of the most popular drill bits. Extra long cutting allows you using these bits to drill deep holes. They are great for most drilling jobs and materials such as aluminum, wood, plastics. Sharp twisted drill bits will make the drilling easier and more effortless.