Larger Internal Diameter: 25.4mm
Larger Outside Diameter: 34.4mm
Smaller Internal Diameter: 19mm
Smaller Outside Diameter: 28mm
Overall Length: 127mm
Recommended Hose Clamp (Guide Only):
Worm Drive Clamp: AF23-2144 (large side) and AF23-1832 (small side)
Constant Tension Clamp: AF28-2639/AF28-2639BLK