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1280K4 has 4 ribs and a 128
"sku":"TB072053400786"
The Mariner SUC211 is a stainless steel ball bearing insert with a 2" bore and set screw shaft locking mechanism
"text": "2/BK116 has a top width of 1
BlackStar H78BS7 1 15/16 K2S - 78 Pitch Finished Bore Sprocket - 7 Tooth - 1-15/16" Bore QD 1280K4 has 4 ribs andThe BlackStar H78BS7 1 15 16 K2S is a 78 pitch Finished Bore roller chain sprocket with 7 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 15 16" bore with keyway and set screws and is ready for immediate installation. Specifications Part Number H78BS7 1 15 16 K2S Chain Pitch 78 Number of Teeth 7
