PAIR 27 x 1 1/4 FLIP FLOP FIXIE WHEELS CHROME LOOK ALLOY RIMS & LARGE FLANGE HUBS + 16T FREEWHEEL27 x 1 1/4 (630 17) FLIP FLOP WHEELS WITH CHROME LOOK ALLOY RIMS,RETRO LOOK LARGE FLANGE HUBWITH SEALED BEARINGS AND SPROCKETS FITTEDWE ARE CONSTANTLY ASKED IF WE HAVE FLIP/FLOP WHEELS IN THE OLD 27 x 1 1/4 SIZE, SO NOW WE CAN SAY YES! WE HAVE THESE GREAT LOOKING CHROME LOOK ALLOY RIM WHEELS27 x 1 1/4 (630 17) CHROME LOOK ALUMINIUM SINGLE WALL RIMSstdVALVE HOLE RIMPOLISHED LARGE FLANGE ALLOY FLIP/FLOP REAR HUB WITH SEALED BEARINGS, 3/8AXLE120mm OLD (OVER CONE LOCK NUT DIMENSION)SUPPLIED WITH A CHROME 16 TEETH FIXED SPROCKET AND 16T FREEWHEELPOLISHED LARGE FLANGE ALLOY FRONT HUB 3/8″ SPINDLE WITH SEALED BEARINGS100mm OLD FRONT HUB36 14G SPOKES PER WHEELWEIGHT OF PAIR 2400 grams approxI am sure you know that these wheels are called ‘flip-flopbecause you can turn 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 for example