Radical RC Fuel Line Clamps.  Size "AA". Clamping range (min 3 teeth engaged) OD of 6.5 to 7.9 mm (.256" to .311").   Pro Tip! It's not the OD of the tubing but rather the OD of the tubing installed on the fitting you need to measure. Clamps can be reused and are double locking. May be installed without removing tubing if you like. Clamping width is 4.25 m (.177"). 5 Clamps per package.

Description
Min Diameter - A16.5mm - 0.256"
Max Diameter - A27.9mm - 0.311"
Band Width - B4.5mm - 0.177"
Band Thickness - C1.6mm - 0.063"
Head Height - D9.9mm - 0.390"
Material - Polyamide 6.6 (PA66)
Weight - 0.001kg/0.002lbs
Also Known As Snapper - Clamp, Ratchet Clamp, Skiffy Clamp
Country of Manufacture - United Kingdom
Color - Black
Hazardous Goods - No
Operating Temperature - 40?C to +105?C / -40?F to +221?F
Flammability Rating - UL 94
RoHS Compliant - Yes

Features
Double Row of Interlocking Teeth - Doubles Strength
Easy to Install with Pliers - also able to wrap around hose on spigot
Reusable & Releasable
Minimal Leak Path
Advanced Tooling for Production Lines
Non-Corrosive and Non-Conductive

Applications
Fluid, Medical, Agricultural Sprayers, Spreaders & Seeders, White Goods, Hydromassage, Automotive, Vending Machine