BlackStar 2VP62 1 TYPE B - Variable Pitch Sheave - 1" Bore flexco-alligator-00h The 2/5VX730 has a 5/8"

The 2/5VX730 has a 5/8" width

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so a 12/D390 from any major manufacturer shares the same dimensions and runs on the same pulleys/sheaves

BlackStar 2VP62 1 TYPE B - Variable Pitch Sheave - 1" Bore flexco-alligator-00h The 2/5VX730 has a 5/8"The BlackStar 2VP62 1 TYPE B is a 2 groove variable pitch sheave, manufactured from cast iron. Specifications Part Number 2VP62 1 TYPE B Product Type Variable Pitch Sheave Number of Grooves 2 Bore Size 1" Material Cast Iron Approx. Weight 10. 0 lbs Belt Profile A B (Variable Pitch) Cross references: Browning 2VP62 1 TYPE B