Hey sewing enthusiasts and leather crafters, this Uenhoy tracing wheel set is exactly what you need for precise pattern transfers! You get two different wheels - a 4mm needle point wheel that's perfect for marking through thick fabrics, and a 2mm serrated wheel that pokes without cutting through delicate leather. The needle point wheel measures 7 inches total with steel construction and plastic handle, while the serrated one is 6 inches with a comfortable wood handle. They're seriously durable thanks to high-carbon steel construction that won't wear out quickly. The needle points are sharp enough to mark through multiple layers, and the serrated wheel creates perfect stitching guides without damaging your materials. Pro tip: if the needle point wheel feels loose, just tighten the screw for better clamping force. Perfect for transferring patterns to leather, fabric, or paper - whether you're making clothes, bags, or any craft project needing precise markings. The handles feel comfortable during long sewing sessions, and the quality is impressive for the price. Just remember these are sharp tools, so keep them away from kids. If you're tired of guessing your stitch lines or struggling with pattern transfers, these tracing wheels will make your crafting so much more accurate and professional-looking!