White Brothers 650b fork specs.
Obtained directly from the White Brother's spec.'s pdf document off their website.

Specifications:   Magic 650b - 80
Dropout: Quick Release
Brake mount: Disc only
Travel: 80mm
Wheel Size: 650b
Damping: IMV
Adjustments: (external and/or internal) Threshhold, Rebound, Air Pressure
Spring: Linear Air Spring
Stanchions: 32mm
Crown: standard
Weight: 3.8lbs/1725g 
Color(s): Black
Steerer Tube: 250mm x 1 1/8"
Axle-to-Crown: 467mm
Offset, Steerer to dropout: 44mm - Quick Release, 42mm - 20mm through axle.

Specifications:    Magic 650b - 100
Dropout: Quick Release
Brake mount: Disc only
Travel: 100mm
Wheel Size: 650b
Damping: IMV
Adjustments: (external and/or internal) Threshhold, Rebound, Air Pressure
Spring: Linear Air Spring
Stanchions: 32mm
Crown: standard
Weight: 3.9lbs/1770g
Color(s): Black
Steerer Tube: 250mm x 1 1/8"
Axle-to-Crown: 485mm
Offset, Steerer to dropout: 44mm - Quick Release, 42mm - 20mm through axle.

Specifications:  Fluid 650b - 100
Dropout: 20mm Thru-axle; Quick Release (can be purchased either way)
Brake mount: Disc only
Travel: 100mm
Wheel Size: 650b
Damping: Open Oil Bath
Adjustments: (external and/or internal) Air Pressure, Compression, Rebound
Spring: Linear Air Spring
Stanchions: 32mm
Crown: standard
Weight: 3.9lbs/1769g, 4.3lbs/1947g
Color(s): Black
Steerer Tube: 250mm x 1 1/8"
Axle-to-Crown: 485mm
Offset, Steerer to dropout: 44mm - Quick Release, 42mm - 20mm through axle.