��Microblading Blades Size: Needle diameter is 0.2mm . ��Unique: Arc Sawtooth 14Pin, and the needle thread is 0.05mm apart. ��Microblading is the best way to create natural looking, realistic hair strokes by using hand tool holder, pigment/ink and needle, drawing a crisp and natural looking hair stroke. ��Each blade is made of surgical-grade stainless steel, sterilized with gamma rays and carefully packed into sealed and sterile blister packaging with expiration date, batch number.