BlackStar 2AK23 1/2 STL - Fixed Bore Sheave - 1/2" Bore 32mm Is 20/A139 the same as

Is 20/A139 the same as other brands' 20/A139

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The 19/3VX750 ships from the Texas Belting & Supply warehouse in Houston

BlackStar 2AK23 1/2 STL - Fixed Bore Sheave - 1/2" Bore 32mm Is 20/A139 the same asThe BlackStar 2AK23 1 2 STL is a 2 groove fixed bore sheave for A section belts, manufactured from cast iron. Features a 1 2" finished bore with keyway and set screws for direct shaft mounting. Specifications Part Number 2AK23 1 2 STL Product Type Fixed Bore Sheave Number of Grooves 2 Belt Profile A Bore Size 1 2" Material Cast Iron Approx. Weight 1. 15 lbs Cross references: Browning 2AK23 1 2 STL, Martin 2AK23 1 2 STL, Maska 2AK23 1 2 STL Compatible