REAR FLIP FLOP WHEEL BLACK 700c 622-13 FIXIE DOUBLE WALL PROFILE RIM + SEALED HUB RRPNEW REAR 700c ( 622 13) FLIP FLOP FIXIE WHEEL DOUBLE (DUAL) WALL ALLOY PROFILE RIM WITH SEALED BEARING HUBS BLACK700c (622 13 ) ALUMINIUM DOUBLE WALL RIM ANODISED BLACK FINISHHIGH PRESSURE (PRESTA) VALVE HOLE RIMALLOY FLIP/FLOP REAR HUB WITH SEALED BEARINGS, 3/8 AXLE120mm OLD (OVER CONE LOCK NUT DIMENSION)SUPPLIED WITH A CHROME 1/816 TEETH FIXED SPROCKET AND LOCKRING32 – 14G SPOKESWEIGHT 1090gramsI am sure you know that these wheels are called ‘flip-flop because you can SWAP the wheel around so you can have a ‘fixed sprocket’ where you have to continually pedal, or a freewheel type sprocket so you only pedal when you have to and can freewheel (not pedal) when you are going downhill.The wheel is supplied with a 16 teeth fixed sprocket. We can supply a 16 teeth or 18 teeth chrome freewheel for an extra 8 if you need this also and there is no extra P & P if ordered with the wheel