BlackStar H50BS18 1 1/4 K2S - 50 Pitch Finished Bore Sprocket - 18 Tooth - 1-1/4" Bore Thrust Washer The 2/BK130 is a banded

The 2/BK130 is a banded v-belt from D&D Global's Dura-Ultimate Band Classical - B Series line

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Is 16/B210 the same as other brands' 16/B210

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100AT10/3950US is a standardized industry size

BlackStar H50BS18 1 1/4 K2S - 50 Pitch Finished Bore Sprocket - 18 Tooth - 1-1/4" Bore Thrust Washer The 2/BK130 is a bandedThe BlackStar H50BS18 1 1 4 K2S is a 50 pitch Finished Bore roller chain sprocket with 18 teeth, precision manufactured from SAE 1045 steel with induction hardened teeth for extended wear life and features machine cut tooth profiles for smooth, reliable chain engagement. This sprocket has a 1 1 4" bore with keyway and set screws and is ready for immediate installation. Specifications Part Number H50BS18 1 1 4 K2S Chain Pitch 50 Number of Teeth 18 Bore