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Gap30 Cycles All Riders. No Attitude. Gap30 Cycles is your source for quality bicycle parts and accessories at great prices microSHIFT M21 Rear Derailleur - 6,7 Speed, Super Short Cage, Black "> Item Description M21 rear derailleurs are designed to work with 6- and 7-speed Shimano road and mountain shifters. Enjoy the wide variety of bikes you can get going again with M21 rear derailleurs.Robust composite and steel constructionCompatible with Shimano 6- and 7-speed mountain and road systemsItem SpecificationsBrand: microSHIFTMfrPartNo: RD-M21SSRear Derailleur Mount Type: 10x1 StandardRear Der/Shifter Compatibility: Shimano MountainRear Der/Shifter Compatibility: Shimano RoadCage Length: ShortDrivetrain Speeds: 6Drivetrain Speeds: 7Weight: 241Color: BlackChain Wrap Capacity (teeth): 21Largest Cog: 32 About Us Payment Shipping Terms Returns About us Our motto is 'All Riders, No Attitude!' We're here to provide friendly and personal service for all cyclists. Shop our great selection of parts and accessories and enjoy fast delivery to your door. We guarantee your satisfaction and stand behind everything we sell. Standard shipping is always free to the lower 48 states. Thanks for your business and enjoy the ride! Payments Payment for all eBay orders must be completed through eBay payments. Shipping We ship within the 48 contiguous United States. Tracking is provided for most US domestic shipments. Free Standard Shipping Most orders are processed within 2-3 business days of order receipt Allow 1-5 business days for delivery after your order has shipped Shipping times are estimated and are not guaranteed by Gap30 Cycles Terms Item Availability While we try to maintain accurate quantity in our listing, items listed on eBay may be sold elsewhere before the eBay listing ends. If you bought an out of stock item, we will cancel your order and issue a refund. Please do not leave negative or neutral feedback for cancelled orders. Condition Guide Unless otherwise noted, all products sold by Gap30 Cycles are brand new in retail packaging and include U.S. manufacturer warranty. 100% Customer Satisfaction Guaranteed We want to ensure your satisfaction. If you are dissatisfied with your purchase or shopping experience, we would like to hear from you. Please contact us using eBay Messaging . Please be sure to include your contact information and order number. Please note: Business hours are Monday-Friday. We try our best to respond to all questions and comments within one business day. Lost or Damaged Shipments If your order was damaged during shipping or if you did not receive your order, contact us and we will be happy to take care of the issue. Please wait until the end of the delivery time estimate before contacting us about missing shipments. Please contact us using eBay Messaging . Please include your contact information and order number. Your Privacy Gap30 Cycles does not sell or market customer information to other businesses or organizations. Customer Comments We are constantly striving to improve our service and would love to hear your comments. Please contact us using eBay Messaging Returns Gap30 Cycles accepts returns within 30 days of order receipt. Return Process Please contact us using eBay Messaging before returning your order. Returns without prior authorization will not be refunded. Return Requirements Returned merchandise must be in the same condition in which it was received. No return credit will be given if an item is in used condition, has been installed, or has missing or damaged retail packaging. Please adequately package return shipments. No credit will be given if item is damaged in return shipment.