Tom Ritchey Believes In High Quality Aluminum Road Wheels Because They Offer Incredible Performance And Durability That'S Hard To Beat At Any Price. He Designed The Critically Acclaimed Zeta To Be Wider, Lighter And Laterally Stiffer—Perfect For A Great Road Riding Experience, Yet Still Tough Enough To Endure Gravel Road Rides And Cyclocross Races That Would Chew Lesser Wheels To Pieces. Combining Decades Of Historic Ride-Proven Research And Testing With Modern Standards, The Zeta Disc Is Now Available In A Tubeless-Ready Classic Finish Version That Is Sure To Add A Timeless Aesthetic To Any Build. Each Zeta Wheelset Is Hand-Built By A Qualified Wheel Technician. Ocr® Rims Design (Off Center Rim) Reduces Wheel Dish To Balance Spoke Tension For A Stronger, Stiffer Wheel.Specifications: - Rims: Alloy Tubeless Ready - Ocr 3mm Offset- Rim Diameter: 700c- Rim Depth: 23.4mm- Outer Rim Width: 24.4 Mm- Inner Rim Width: 19.5mm- Suggested Tire Size Range: 25-40mm- Hubs: Forged Disc Thru-Axle Hubs And Sealed Bearings - Hub Spacing: 100x12mm Front / 142x12mm Rear- Axle Compatibility: Thru-Axle (12mm) - Standard Quick Release (Conversion Kits Available Separately)- Freewheel: Patented 6-Pawl, 12-Point Micro-Clutch Engagement System- Freehub Material: Alloy- Disc Brake Compatibility: 6-Bolts- Spokes: Dt Competition 2.0/1.8 Double Butted / Silver- Front: 24 Spokes / 12x283mm / 12x285mm / 2x Lacing- Rear: 24 Spokes / 12x283mm / 12x285mm / 2x Lacing- Nipples: 2.0 Brass 12mm / Silver- Weight: 1750g/Set