Yanran High-Speed Steel Small Shank Twist Drill Bit Stainless Steel Concrete Wall (14mm + Twist Drill*1) 2-Piece Set

Smooth chip evacuation reduces heat accumulation and prolongs tool life

Suitable for drilling in 45# steel, stainless steel, square tubes, chrome steel, iron (up to 1mm thickness), cast iron, copper, aluminum alloy, plastic, and wood

Ideal for household and construction site use

When drilling stainless steel, use water cooling

Not suitable for drilling walls, rock, glass, or concrete

Not recommended for steel plates thicker than 5mm (hand drill), 20mm (bench drill), 30mm (magnetic drill)

Not suitable for large/deep hole or reaming operations beyond specified diameters

For large diameter or deep hole drilling, radial drill recommended

Use water cooling when drilling stainless steel to prevent overheating

Select appropriate drill size and machine according to material and thickness for optimal performance

Yanran Small Shank Twist Drill Bits are precision-engineered from high-quality HSS 4341 steel, offering superior hardness, wear resistance, and efficient chip removal. Designed for a wide range of materials and compatible with various drilling machines, these drill bits ensure fast, accurate, and durable drilling performance in both household and industrial applications.