Feature:1.Applicable Model: The nut wrench for MC1, for RMR, for Alpha Gen 1 Generation II, for Bravo, for Blackhawk. Please confirm whether it is consistent with the product you want before buying to avoid unnecessary return. 2.OE Number: The part numbers for reference are 39136235, 189803, 9117256. Please confirm whether it is consistent with the OE you need to avoid wrong buying and other problems. 3.Durable Material: The nut spanner is made of durable and reliable material, high strength and wear resistant, having a long service time. 4.Easy to Use: The wrench drive tool is simple to use and operate, convenient and time saving, don't need too much complicated steps. 5.Ideal Replacement: The bearing retainer nut wrench is a perfect tool for repairing, can directly replace the old and broken wrench, ensuring the normal use.Item Type: Spanner Nut WrenchOE: 39136235, 189803, 9117256Application: Remove and install driveshaft housing (upper) bearing retainer nut.Fitment: For #1 1982 and earlierFor R MR For Alpha Gen 11983 -1990For Alpha Generation llFor MC1For BravoFor Blackhawk (Not For Bravo 2, 3, XR, or TR)Package List:1x Spanner Nut Wrench Note:1. Please check the OE number and fitment model carefully before purchase.2. Installation by a professional mechanic is strongly recommended.3. Whether before or after sale, please contact our customer service team if you have any questions, we will provide the best and professional service.