This is a case of 5,500 wheels. Wheels are packaged in bags of 100 pcs (55 bags per case)
Perfect for small car projects 
High quality, durable plastic 
Lightweight and low inertia, great for wind-powered vehicles 
Comes in red, blue, yellow, and green in equal measure (25 of each color) 
Wheel diameter is 1.36 inches. Inner hole diameter is 1/8 inches, which fits onto 1/8" dowels