Premium Materials: These sewing needles are made of high-quality stainless steel, ensuring a long service life, wear resistance, oxidation resistance, and resistance to deformation, wear, or breakage. Their polished surface allows for easy threading through fabric, providing an optimal sewing experience. Large Eye Design: Our large eye sewing needles feature an extra-large eye design, allowing for quick and easy threading without a threader. Even those with limited mobility or poor eyesight can easily thread the needle and complete sewing projects quickly. This is an essential product for hand sewing. Easy to Use: This sewing needle set includes both straight and curved needles, and comes in two lengths. You can choose the appropriate size to easily complete a variety of complex sewing projects, meeting most of your daily sewing needs. Versatile Use: Made of high-quality stainless steel, these professional large eye sewing needles easily handle a wide range of embroidery, art, craft, and sewing projects, including sewing mattresses, leather, upholstery, carpets, tents, canvas, bags, tote bags, heavy fabrics, and more. Product Details: The set includes one 17cm straight needle (approx. 2.8mm in diameter), one 17cm curved needle (approx. 2.8mm in diameter), one 14.5cm straight needle (approx. 2.5mm in diameter), and one 14.5cm curved needle (approx. 2.5mm in diameter). Note: After use, please keep the needles dry and store them in a safe environment to extend their lifespan.