Benro Master Step-Down Ring 82-62mm (DR8262)

PRO BAT 420 18T 17mm Front Engine Sprocket 125cc 140cc 150cc 160cc TaoTao Loncin Lifan Zongshen Roketa Coolster Sunl Chinese ATV Quad Dirt Pit Mini Bike Go Kart

Bibike Single Speed Conversion Kit 13T/14T/15T/16T/17T/18T/20T/22T Single Speed Cassette & Spacers

Hycline Single Speed Bike Freewheel: 18T Compatible with 1/2''×1/8'' Bicycle Freewheel - Threaded Type Freehub Replacement Parts (Black)

Losi Pinion Gear 18T 0.5M 2mm Shaft LOS212022 Electric Car/Truck Option Parts

Allen & Heath CQ-18T Digital Mixer with 7" Touchscreen WiFi and Bluetooth Connectivity

INJORA 18T Underdrive Worm Differential Axle Steel Gears for Axial SCX24 AX24 C10 JLU Gladiator Bronco Deadbolt 1/24 RC Crawler Car Upgrade

32P Hardened Pinion Gear Set 1/8 inch Hole 17T 18T 19T 20T 21T with Hex Key (Compatible with 0.8 Metric Pitch)

State Bicycle Co. Fixed Gear/Fixie Bike Cog, Silver, 18T