Spider is detachable bro. It's essentially the S975 non series modular crank.
http://www.power2max.de/europe/en/Produkt/power-meters-en/power2max-type-s-sram-s900-and-force22-without-cranks-road/
@Howard started
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Spider is detachable bro. It's essentially the S975 non series modular crank.
http://www.power2max.de/europe/en/Produkt/power-meters-en/power2max-type-s-sram-s900-and-force22-without-cranks-road/