Meghna Shimano Hg200 12-32T Bike Cassette 7/8 Speed Sprockets For Folding Product Details Model: CS-HG200-7; SHIMANO TOURNEY - 7-Speed - HYPERGLIDE - MTB Cassette Sprocket. HG200 Cassette Features: The special anti-drop chain tooth loss design, the chain guide groove design makes the shifting more sensitive, and realizes easy, fast and smooth shifting. It is made of aluminium alloy and chromium-molybdenum steel, which are lightweight and durable. The surface is nickel-plated for anti-rust treatment to enhance durability and is suitable for various bad riding environments. Combination: 12-14-16-18-21-24-28T (bm); Rear speeds: 7 Speed. How to Choose freewheel or Cassette: 1. Count how many teeth the smallest piece of the freewheel/cassette is, and the cassette is generally 11 or 12 teeth; 2. Remove the freewheel/cassette, if there is column foot on hub, it will be cassette, and if there is no column foot and it has screw thread inside, it will be freewheel. Note: We provide excellent customer service, please feel free to contact us if there is any question. Payment We accept PayPal and credit cards via PayPal. Taxes - US We collect sales tax, as required by law. Shipping We make every effort of shipping within 3 business day of payment clearing. The estimated delivery time is 2 - 5 business days from the shipping date. Policies If you do need to return your item, please contact us via email (you will receive an email when your product ships with additional details - Subject: Important information about your purchase). You will then be provided with a return shipping label and packing slip. Pack the item carefully. Include the packing slip, apply the shipping label, and return the item within 30 business days of the date you request a return, or your return will be canceled. Once we receive your order we will inspect the return. Please allow up to 5 business days of receiving the returned item for your refund.