The elliptical for those who want more power and optimized pedaling. This transducer is less oval (only 10%) and does not have as aggressive timing (112') as competing manufacturers. However, it still brings the benefits of elliptical gears in the form of better force distribution during pedalling and reduced torque on the cassette. Thanks to this shape you are carrying as if two converters in one. During the shooting phase, 34z. variant will behave like a standard 36 and during the release phase like a 32z. Includes cut out threads for M8 converter screws. Installation is therefore easy, precise and fast. The size of this converter corresponds to the size of a standard converter + 2 teeth. So check the space around the centre of your frame to see if you have room for the converter. Compatible with Quarq wattmeters in 34 and 36 tooth chainring sizes Drop-Stop A is for 9,10,11 spd chains of all brands and 12spd SramEagle, KMC, Connex and Wippermann chains only Weight: 32T - 41g | 34T - 48g | 36T - 55g Material: 7075-T6 aluminum Made in USA