it is a ASME standard 44 teeth sprocket with .5" pitch.
Crankset with 38T & 44T Sprockets
sprocket
Sprocket
SPROCKET
New Sprocket
sprocket design
Chain Sprocket
toothed sprocket
drive sprocket
Sprocket from chain sprocket mechanism
apache rtr chain sprocket
Sprocket N#.57
Sprocket for conveyor system
Industrial chain conveyor sprockets
sprocket used for transmission
53 tooth sprocket
3D model of Sprocket