Material: crank arms, chainrings: aluminium (anodized) axle: steel Recommended Bottom Bracket: SM-BBR60 (thread type) SM-BB72 (Pressfit) Type of chain: HG-EV 11-speed, HG-X11 Weight supplement: 170 mm | manufacturer's specs Shimano GRX FC-RX810-2 Crankset 2x11speed - 48/31 T Shimano's GRX cranks are designed to handle a wide variety of terrain and riding styles and feature a 2.5 mm wider chainline for more freedom in frame design and the use of wider tires. The Hollowtech II GRX FC-RX810-2 crankset relies on a 2x11-speed drivetrain concept and offers the optimum gearing for every terrain and riding style thanks to Shimano's wide range of cassettes and sprocket ratios. The aluminium crank with a 46.9 mm chainline is characterized by the widest gradation of all Shimano components to date which is achieved by a 48 to 31 teeth chainring ratio. The 4-arm chainrings - made of aluminium as well - are compatible to HG-EV and HG-X11 chains. Product Name: Shimano GRX FC-RX810-2 Crankset 2x11-speed - 48/31 Teeth Manufacturer: Shimano Parts Item Code: SHI422558 activity: Cycling material: Aluminium usage bikesport: Road Bike, Cyclocross, Gravel crank arm length: 170, 172,5, 175 shifting system: 11-speed bottom bracket axle profile: 24mm Hollow Shaft Road - bolt circle diameter: 110/80mm number of teeth: 48-31 chainring mount: 2-speed chain line: 46.9mm Q-factor: 151mm Model year: 2022 Color: Black weight: 710g manufacturer item code: IFCRX8102CX81 (170 mm) IFCRX8102DX81 (172.5 mm) IFCRX8102EX81 (175 mm) Deliver to Malaysia, SG, Brunei, Worldwide Accept Ewallet Boost TouchnGo Etc.. & Credit card How to Order 1.Product Option: 2.Quantity: 3.Color: 4.Name: 5.Address: 6.Contact number: Send to ☎FB http://m.me/icebikeheaven ☎ http://www.wasap.my/60174204398 Sales, Order, Customer service ☎ http://www.wasap.my/60195272398 After sales/ Warranty FOLLOW US ✔ https://www.ebay.com/str/icebikeheaven37 ✔ https://shopee.com.my/icebikeheaven?tab=shop ✔ http://www.lazada.com.my/ice-bike-heaven/ ✔ https://fb.me/icebikeheaven ✔ https://www.instagram.com/icebikeheaven37/ Buy from Us! 🚴🏻💯% POSITIVE FEEDBACK 🚴🏻💯% Warranty & After Sale Service 🚴🏻💯% PARCEL ARRIVAL GUARANTEED 🚴🏻💯% ❌hidden charges 🚴🏻 7️⃣ days size exchange 🆗 🚴🏻 7️⃣ days 100% 💲💲 Guarantee back ☄ Prompt response 🥇♞ SSM Registered company- Icebikeheaven 🥇 8 Years of experience