Shimano bicycle bottom bracket model: BB-UN52 made in Japan axle length: 113.4 mm thread: 1.37 x 24 Tpi/ 68 BSA weight: 306 gram Great gently used condition. No rust and still looks shiny! Bike it was in was kept inside. Spindle rotates smoothly without play or grittiness. This BB should have many many years of use if properly installed and maintained!
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