REAR 26 x 1.75 (559-21) FLIP FLOP FIXIE WHEELS RIM WITH SEALED HUB & 16T COGREAR 26 x 1.75 (559 – 21) MOUNTAIN BIKE SIZE FLIP FLOP FIXIE WHEEL IDEAL FOR CONVERTING YOUR MOUNTAIN BIKE TO A FIXIEFLIP FLOP HUB WITH SEALED BEARING HUBSTHIS SIZE IS USED ON MANY ADULT BIKES, ATB OR MTB, DOWNHILL, TREKKING, CRUISERS OR JUST A STANDARD FRAMEPOLISHED ALLOY FLIP/FLOP REAR HUB WITH SEALED BEARINGS, 3/8AXLE120mm OLD (OVER CONE LOCK NUT DIMENSION)SUPPLIED WITH A CHROME 1/816 TEETH FIXED SPROCKET AND LOCKRING26 x 1.75 (559) MACH1 DOUBLE WALL ALLOY RIMTHIS IS FOR TYRE SIZES 26 x 1.50, 26 x 1.75, 26 x 1.90, 26 x 2.00, 26 x 2.125, 26 x 2.25.36 – 14G SPOKESWEIGHT ONLY 1100 grams (approx)I am sure you know that these wheels are called ‘flip-flopbecause 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 9 if you need this also and there is no extra P & P if ordered with the wheelIF YOU REQUIRE OTHER SIZES OF FIXED OR NEED A PAIR, PLEASE SEE OUR OTHER LISTINGS