Best Black Oxide Installer Drill Bits in 2026

Features a full-cone threaded tip for fast and effortless drilling

Contoured paddle for fast chip removal

Hex shank power groove to reduce slippage

The item is Bosch Daredevil DSBE1012 12-inch drill bit extension

Used for power tool accessories, drill bits & accessories

The product is manufactured in China

Aggressive and self feeding Auger point

Heat treated spring steel shank with wire fishing accommodation holes in the head and shank

Three flat non-slip grip on the chuck end

ACCURACY: Featuring a no skate tip to reduce bit walking, eliminate the need for center punch, and provide accurate starts

RELIABLE: Designed with long flutes for increased speed and effective material removal. The Bosch BL9IM Drill Bit Set is ideal for universal drilling in a variety of drills including 1/4in. hex drills.

TOUGH: Featuring an impact-rated shank, engineered for higher torque drills and impact drivers in tough construction applications.

Upgraded multi-grind heads – deliver up to 85% faster drilling in metal than standard bits

Hex shanks and impact rated – allows use in impact drivers and hammer drill/drivers for added versatility

Sharp ground cutting edges – designed for advanced performance

Package includes: you will get 2 pieces 1/4 spade drill bit extension hex shanks and 2 pieces hex keys, which are helpful for wood spade bit extension; 2 Sizes for length, namely 6 inches and 12 inches, provide nice operability; Suitable for hard-to-reach bolts and screws, allowing you to complete your work better and faster

Fits for most 1/4 inches bits: wood bit extension sets are suitable for most 1/4 inches drill bit extension hex shank insert and power bits, which can be applied for all of your needs screws, nuts, drills, handheld drivers, tool box and construction; With that extra-long extension, you’ll be able to reach almost everywhere; Please confirm the size before buying

Reliable material: the spade drill bit extension is made of high-carbon steel, safe and durable to use; It not only can hold bits securely in place to make sure that your bits keep in place and never wobble while in use, but also give you maximum control and accuracy when drilling and driving; Besides, the durable high-carbon steel construction makes it to has nice rust resistance, and suitable for use with wood spade bits

Chuck is compatible with round, hex and quick-change shank drill bits

High carbon steel construction for durability and life

Bits lock in place when set screw is tightened with hex key

Universal Hexagonal Shank: 3 flute woodworking hole opener bit is designed with a universal hex shank and is suitable for hand drill, lithium drill, table drill and other models.

Versatile: This 3 flute woodworking hole opener bit can be used for hinge drilling, wood panel drilling and furniture drilling.

Drill Diameter Size: Our 3 flute woodworking hole opener drill has a 35mm (1.38in) hole diameter and a 12mm (0.47in) working depth.

Material: These taps are made of high-speed steel, and the appearance is nitrided, with high hardness and rust resistance

Specification: There are 6 taps of different sizes, from M3 to M10, which can be used for tapping various threads

Features: The tap is designed with spiral groove, which will improve the chip cleaning process. They also have drilling function, which can drill and cut new threads at the same time.

99pcs Drill Bits Include: 11pcs of each size( 1/16", 5/64", 3/32", 7/64", 1/8", 9/64", 5/35", 11/64", 3/16", 13/64", 7/32", 15/64", 1/4", 17/64", 9/32", 19/64", 5/16", 21/64", 11/32", 3/64", 3/8", 25/64", 13/32", 27/64", 19/32", 29/64", 15/64", 31/64", 1/2") drilling dia M35 straight round shank twist drills, can accommodate a wide range of drilling needs.

M35 Twist Drill Bit: Made from M35 cobalt material which has the characteristic of high hardness and durability. The cobalt material gives the bit superior wear resistance and overall toughness, making it great for long-term use in a variety of drilling applications.

Quick and Clean Drilling: The external point angle design of this cobalt twist drill bit allows for fast and efficient drilling, with effective chip removal to prevent clogging, perfect for a range of materials including metal, wood, and plastic.

13pcs Drill Bits Include: 1pcs of each size( 1/17", 7/89", 6/61", 11/93", 12/95", 4/29", 14/89", 14/79", 17/90", 13/66", 21/97", 17/72") drilling dia M35 straight hex shank twist drills, can accommodate a wide range of drilling needs.

M35 Twist Drill Bit: Made from M35 cobalt material which has the characteristic of high hardness and durability. The cobalt material gives the bit superior wear resistance and overall toughness, making it great for long-term use in a variety of drilling applications.

Quick and Clean Drilling: The external point angle design of this cobalt twist drill bit allows for fast and efficient drilling, with effective chip removal to prevent clogging, perfect for a range of materials including metal, wood, and plastic.