Crafted from premium stainless steel, these diamond art rulers measure approximately 10×4.5×1 cm and are durable, non-bending, and perfect for repeated use. Designed for both square diamond painting and round drills, they provide precise alignment to help you achieve professional-quality DIY diamond painting results. This versatile set includes 10 styles: 1 Row-Square, 2 Row-Square, 3 Row-Square, 4 Row-Square, 1/2/3/4 Row-Square, 1 Row-Round, 2 Row-Round, 3 Row-Round, 4 Row-Round, and 1/2/3/4 Row-Round, compatible with canvases up to 50 squares (125 mm). The diamond dot drill alignment tool and tool grid help guide each diamond into neat, straight rows, while pairing perfectly with diamond art pens or diamond painting fix tools to save time and enhance precision.Ideal for use with diamond art kits for adults, diamond dots kits, and other DIY diamond painting tools, these diamond painting stainless steel rulers ensure clean, organized, and visually stunning results for both beginners and experienced crafters.They also make a thoughtful and practical gift, inspiring creativity, relieving stress, and elevating every diamantine art project for family, friends, or hobbyists.