X-Series Backstop Kit XBK2, 1 7/16-inch Bore flexco-alligator The 250-S5M-375 is a timing

The 250-S5M-375 is a timing belt from D&D Global's Dura-Sure Torque - S5M Series line

The 2/B104 is a banded v-belt from D&D Global's Dura-Prime Band Classical - B Series line

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The Continental 4030340 OETS MULTI-V BELT is a Micro-V (multi-ribbed) belt with Micro-V PK-section dimensions

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X-Series Backstop Kit XBK2, 1 7/16-inch Bore flexco-alligator The 250-S5M-375 is a timingThe Vortex XBK2 1 7 16 is a x series backstop kit xbk2, 1 7 16 inch bore. An XBK Series backstop kit installs on an X Series worm gear reducer to prevent reverse rotation of the output shaft. Used on inclined conveyors, bucket elevators, and applications requiring mechanical anti reverse protection. The bore size matches your reducer's bushing kit output bore. This part fits X Series reducers, specifically XBK2 series, 1 7 16" bore. Stocked at Texas