Perfect with bikes without top tubes. Can be used on girls, full suspension and BMX bikes. Plastic coating to prevent scratching of the bike. Surco Products Inc. is one of the premier automotive accessory manufacturers in the United States. Due to their in-house operation, they are able to carry a diversified line of automobile accessories. Surco controls the entire manufacturing process enabling them to make sure that the quality level is always high and up to Surco's standards. For over 30 years in business, Surco has established high quality products and earned the trust of its customers.