MR18307 LLB Enduro Bicycle Ball Bearing Abec3 (New DT Hubs) 18x30x7mm

52100 CHROME STEEL - Used for the most popular and affordable bearings in the range. It is heat treated and subjected to cryogenic treatment at -310 degrees Fahrenheit to optimize the crystal structure and prolong its useful life, especially in combination with ceramic balls. ABEC-3 - Enduro's ABEC 3 and ABEC 5 bearings, designed specifically for cycling use, offer deeper throats and larger diameter balls in every available size to increase strength and durability. Radial contact C3 increased internal game Inner diameter: 18 mm Outer diameter: 30 mm Thickness: 7mm