Straight bevel · Gleason
m 2.2 · 20° · straight, Gleason proportions
The same pair in Gleason's heel-based proportions, the ones catalogue gears use.

The 15 : 45 pair (module 2.2, 3 : 1) with AGMA 2005's mid-face proportions.
The link opens the pinion and gear in the Bevel Gear Designer's 3D view. Change the teeth, the module or pitch, the shaft angle, the bores or hubs, then download STL, STEP or a drawing.
m 2.2 · 20° · straight, Gleason proportions
The same pair in Gleason's heel-based proportions, the ones catalogue gears use.
m 2.2 · 20° · spiral 35°, pinion left hand
Curved teeth at a 35° spiral angle: more teeth in contact, smoother and quieter.
m 2.2 · 20° · hypoid, pinion left hand
The pinion moved off the gear's axis: a bigger, stronger pinion, as in car axles.
m 1.5 · 20° · straight, Gleason proportions
The most common stock miter size: 20 teeth, module 1.5, Gleason proportions that match catalogue gears.