Description: Part Number:91-36235, 18-9803, 91-17256 91-61069 90100 Applicable Models:Bearing housing nut tool, for tradesman alpha 1, alpha 1 pre, 2nd gen, for bravo 1, Trs outdrive. Suitable for Mercury/Mariner outboard motors 150HP and above. For R in 1982 and earlier, MR. For the Alpha generation 1983-1990. For Alpha II (all years). For MC1 (all years). For Bravo (all years). For Blackhawks (all years). NOTE: Will fit the 4 3/8" retainer nut and not fit Bravo 2, 3, XR, or TR. Transmission monkey wrench, for 1982 and earlier R, MR. For the Alpha generation 1983-1990. For Alpha II (all years). For MC1 (all years). For Bravo (all years). For Blackhawks (all years). Function:Drive Spanner Wrench Bearing Carrier Nut Tools , Used to remove and install driveshaft housing(upper)bearing retainer nut. Material: Drive Spanner Wrench Bearing Carrier Nut Tools are Made of alloy material, wear resistant and durable. High Quality: Spanner Wrench Bearing Carrier Nut, Professional manufacturing, stable performance, and long service life. Specification: Material: Alloy Size Chart: Wrench length: 14.96inch Bearing Nut Length: 8.03inch, Diameter: 3.65inch Package Includes: 1 Drive Spanner Wrench Bearing Carrier Nut Note: Please allow slightly errors due to manual measurement and different monitors.