Straightshaft spiral drill — 1.2 mm × 100; diameters range 0.5 to 2.0 mm Key benefits Reliable precision for small-diameter holes: spiral flute geometry helps produce clean, consistent holes in delicate work. Ready supply for production or repetitive tasks: 100 pieces of the 1.2 mm size reduce downtime and repeat ordering. Secure mounting and smooth operation: straight shaft design fits standard straight-shank collets, pin vises and rotary tools that accept straight bits, keeping the cutter stable during use. Versatile diameter coverage: drills available across the 0.5 / 0.6 / 0.7 / 0.8 to 2.0 mm range to match common small-hole requirements. Features and specifications Type: Spiral drill with straight shaft design. Diameter range: 0.5 mm, 0.6 mm, 0.7 mm, 0.8 mm up to 2.0 mm. Pack quantity (specified product): 100 pieces of 1.2 mm spiral drills. Function: Designed for precise small-hole drilling with spiral flutes to assist chip evacuation and hole quality. Practical applications Printed circuit boards (PCB) and electronics: accurate, repeatable holes for vias and component leads. Jewelry, watch repair and micro-mechanics: fine drilling for delicate parts and small fasteners. Model making and prototyping: consistent small-hole work in plastics, wood, resin and thin metals (use appropriate speeds and tooling guidelines). Usage notes Use appropriate speeds and light feed pressure for small diameters to minimize breakage. Ensure the holder or collet is compatible with straight-shank bits and secures the drill without runout. Keep bits clean and replace any that show wear to maintain hole quality. Package contents 100 pieces of straightshaft spiral drills in the size of 1.2 mm (product specifications as stated above).