BlackStar H100BTL19 - 100 Pitch Taper Lock Sprocket - 19 Tooth QD-W so the Megadyne 5/5V670 interchanges

so the Megadyne 5/5V670 interchanges with Gates

25T5/425R is a timing belt used on positive

"sku":"TB072053400557"

so a 2/BK115 from any major manufacturer shares the same cross-section and length and runs on the same sheaves

Belt Section XPB Sub-Type Cogged Width 17mm Thickness 14mm Length 1500 mm Material Neoprene Reinforcement Polyester Cord Color Black Temperature Range -30°F to 185°F

BlackStar H100BTL19 - 100 Pitch Taper Lock Sprocket - 19 Tooth QD-W so the Megadyne 5/5V670 interchangesThe BlackStar H100BTL19 is a 100 pitch Taper Lock roller chain sprocket with 19 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 requires a Taper Lock Bushing (sold separately). Specifications Part Number H100BTL19 Chain Pitch 100 Number of Teeth 19 Bore Type Taper Lock Hub Style Taper Lock Bushing Required