NOTE This is a CAMO SpiderONLY.  A CAMO Chainringis required to complete this system. This is a spider for use with the SRAM cranksets that have a removable spider The CAMO chainring system was created by Wolf Tooth engineers for Chainline And Material Optimization on direct mount style chainrings. The key advantages include: Perfect chainline for wear and shifting precision Optimal material usage for weight, stiffness, and wear Spend less for chainring swapping by buying only the chainring, compared to chainrings that have an integrated spider Swapping chainrings is very fast with only five small bolts and no nuts Availability, as Wolf Tooth has many direct mount options: round or oval, stainless or aluminum, for several cranksets. Wolf Tooth's patented Drop-Stop®  wide/narrow tooth profile for the ultimate chain retention and mud shedding ability Compatibility This spider is designed to work with the SRAM cranksets that have a removable spider. Four different chainline options are available. The number and letter refer to the mm offset and direction from the mounting face to the centerline of the teeth: M8 (6mm offset - dished towards the frame) For use with GXP cranks and BB30 Long Spindle standard 49mm chainline. Praxis Works Road/CX cranks use this offset. See the image below for how to measure your spindle length if you have BB30. This is for use on bikes with 135mm QR, 142mm thru axle, and some 148mm bikes.  Details here on the 148mm Boost spacing. M5 (3mm offset - Boost) dished towards the frame) is for 52mm chainline for Boost bikes. Praxis Works mountain bike cranks use this offset for DM-A chainrings. This link explaining 148mm Boost spacing will help you decide if you need the M5 or M8. M2 (0mm offset) Is for a 49mm chainline on a BB30 short spindle crankset. Praxis Works mountain bike cranks use this offset for DM-B chainrings. See the image below for how to measure your spindle length if you have BB30. P2 (plus 4mm offset - dished outwards away from the frame) For fat bikes that have 190/197 rear spacing but use a 100mm spindle.  This is now very common on production fat bikes to keep the q-factor slimmer Can be used for creating a "boost" chainline with a BB30 short spindle crankset CAMO mounting boltsare included with each spider but can also be purchased separately in a variety of colors Chainline - varies by which spider you choose.  See compatibility above. If you plan to ride in very muddy conditions, we recommend a chainguide or chainkeeper in addition to a clutch-type rear derailleur! Without these precautions, you may experience chaindrops and/or chainsuck. All Camo Spiders are not compatible with Bash Guide ISCG05 Installation notes: You will be able to access all bolts without removing the spider Line up the little dot on the ring with the dot on the spider.  Don't worry, you cannot install the ring in the wrong rotational orientation. Be sure the bosses on the spider "plug in" to the chainring. Torque bolts only to 4-5 Nm and use blue Loctite threadlocker Related Products CAMO chainring - elliptical or round and stainless or aluminum Tech Specs Weight:M8 • 32g |  M5 • 28g  |  M2 • 28g  |  P2 •  30g Material:7075-T6 aluminum Included:ED coated steel bolts included Made in USA [snippet name="Prop 65"] Patent and trademark information