Square Hole Drill Bits for Woodworking， Mortise Bit High Speed Steel Woodworking Hole Saw Mortise Chisel Bit Set Twist Drill1/2" 1/4" 3/4" 3/8" 5/8"5/16" 9/16" （7pcs）

• The drill bit is made of alloy steel forging, integral heat treatment, high hardness, longer service life, the blade is sharp and wear-resistant The U-long chip flute is designed to facilitate the removal of sawdust and improve the drilling efficiency. the force of the core edge of the drill bit is on the same plane, which effectively protects The drill tail adopts a circular design to make the clamping more stable. suitable for square hole drills and square tenoning machines You can punch square holes to meet the requirements-1/2 inch (12.7mm), 1/4 inch (6.4 mm), 3/4 inch (19 mm), 3/8 inch (9.5 mm), 5/8 inch ( 16 mm), 5/16 inches (8 mm), 9/16 inches (14 mm) We will provide you with quality service, no matter what questions you have, please contact me in time, I will solve it for you immediately and make you satisfied.