This LEGO PN 57520 Technic Tread Sprocket Wheel is a must-have for any LEGO enthusiast. It comes in a sleek black color and consists of 3 pieces, making it a perfect addition to your LEGO collection. The sprocket wheel is designed for the TECHNIC theme and is a part of the Vehicles subtheme, making it an ideal choice for those who love to build and experiment with different LEGO sets. The brand is LEGO, which ensures high-quality and durability of the product.