The "Style GT 77 (synthetic weft) 4/30" appears to be a reference to a specific type of synthetic weft for hair extensions or wigs, with colors 4 and 30.
Here is a possible description for this product:
"Style GT 77 (4/30) synthetic weft is a versatile option for your hair extension needs. Made with quality materials, this weft provides a strong, durable foundation for creating custom wigs and hair extensions Colors 4 and 30 offer a subtle blend of dark and light brown tones, ideal for creating natural, elegant looks. Whether you want to add length or volume to your hair, this synthetic weft will allow you to achieve hairstyles. beautiful and stylish in no time."
This description highlights the product's durability, versatility, and color combination features to inform potential customers about its benefits.