30 Tooth, Drop-Stop A, Boost, Mtb Wolf Tooth Direct Mount Round Mountain Bike Product Details Narrow wide gear plate for direct mounting cranks (sram) on bikes or BOOST frames (148mm) rear axle. Valid for 1x10 single-plate transmissions; 1x11 and 1x12. Patented plate with Wolf Tooth Drop-Stop technology that prevents chain outings. 3mm offset Weight: 58 grams Mount type: Direct Mount for Sram Teeth: 30 Offset: Boost Chain Compatibility: Drop-Stop A tooth profile for all 9, 10, and 11spd chains or 12spd SRAM Eagle, KMC, Connex or Wippermann chains Material 7075-T6 aluminum, Made in USA by Wolf Tooth Components 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.