Check the listing for details. ZIPP 30 Course Disc-brake Clincher Wheel Ceramic Bearing (2013-current)-77D/177D. Condition: New. Listed at 164.76 USD. HSC Ceramics is proudly Australian owned Designed by HSC Ceramics Australia in Melbourne Assembled in Australia HSC's ceramic components are manufactured to the highest standard for quality and accuracy before they are assembled by our experienced mechanics in Melbourne. We inspect each ceramic bearing before shipping it to you. Use what Olympians and World Champions use. Now you are one step closer to the speed you have long been dreaming for! ZIPP 30 Course Disc-brake Clincher Wheel Ceramic Bearing (2013-current)Front hub model 77D Rear hub model 177D Features: Grade 3 Si3N4 ceramic balls - the highest grade in the market ABEC 7 - mirror polished alloy steel bearing races C 3 clearance - less vibration and smoother riding Designed for Cycling Use Kit configuration: 6 Ceramic Bearing Kit 2 front hub / 2 rear hub / 2 cassette body You own a HSC product, you own a HSC team!