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Good compatibility: 5-in-1 inner bearing shell tool, suitable for most inner bearings. Covers 90% of BB threaded models. Durability and wear resistance: made of aluminium alloy, CNC turning, quenching heat treatment, durable. Fine workmanship, no hands hurt, good performance. Applicable model: for ZTTO BB91 / BB109 / BB30SH / PF30SH / BB86-30 / BB30-30 / SM-BB52 / SM-BBR60 / MT800 / SM-BB93 / BB9000 / BB9100 / SR for DUB series series / F-MEGA BSA30 / MEGA BB386. Wonderful replacement: wonderful accessory for bicycles. Used for 10mm Allen key 2 different colours to choose from to meet your different needs. Satisfaction guaranteed: We offer you professional customer service. If you are dissatisfied with the product, please do not leave a bad rating. Please email our store to describe your problem. We will take action immediately to make you satisfied. Thanks again for your support. › See more product details