Product Description The Crank Armor guards by Zefal protect your crank arms from stone chip damage. Specifications:Application:Enduro, Downhill, Cross Country, GravelMaterial:Composite materialDimensions (W x L x H):40 x 70 x 16 mmCompatibility:SRAM:X1, GX, NX, X9, X7, X5, ApexFSA:K-Force Light, VeroShimano:XT, SLX M7000 / M7100 / M7120, Deore, Alivio, Acera, 105 R7000 / R7100, Tiagra, E8000, GRX 600, GRX 810Rotor:REX 2, 3DTruvativ:Hussefelt, Holzfeller, E400, E300, Firex, Aka, Descendant, Stylo 7K DUB, Stylo 6K DUBStronglight:Lexar 2x / 3x, ArgosRace Face:Turbine, Atlas, Aeffect, Respond, Chester, RideFeatures:effective protection against falling rocksmade of soft thermoplasticdurable and resistantvery easy to attach to the crank armsManufacturer Numbers:black:2610red:2612Contents:1 pair of crank guards Weight: black: 20 g Manufacturer: Zéfal SA 1 Route d'Ouvrouer 45150 JARGEAU France zefal@zefal.fr