SPYDER When combined with our CMC cranks or other BMX style cranks, the 4-bolt arm CNC alloy spider will allow your crankset to can accept triple chainrings or run other ring/bash guard setups. Runs on most 2 and 3-pc BMX style cranks thanks to the 19mm and 22mm spacers (provided). Has a BCD of 104/64 and is available in anodised black with laser etched graphics. ................................................................................................................................................................................ Material: aluminum 6061-T6 Size: 19 and 22mm spacers included BCD: 4-armspider at 104/64 Color: black Surface finish: sand-blasted and anodized Logo: all lasered logo