Comp Zeta GX are custom made wheels for TLR tires.the rims offer a wide inner diameter of 25mm, so wider gravel tyres with 28 knockout holes will fit well. Designed for durability and performance in harsh and demanding conditions in remote locations or close to home, and representing incredible value for money, Comp Zeta GX wheels are tough, reliable and ready for anything. Rims: 6066 alloy Tubeless Ready - OCR offset Rim diameters: 650b and 700c Rim depth: 19mm Outer rim width: 29mm Inner rim width: 25mm Suggested tire size range: 32-67mm Hubs: forged disc thru-axle hubs and sealed bearings Hub spacing: 100x12mm front / 142x12mm rear Axle Compatibility: thru-axle (12-15mm) - standard quick release (conversion kits available separately) Freewheel: 4-pawl engagement system Freehub material: alloy Freehub options: Shimano / SRAM XD-Road Compatibility: Shimano 9-11 speed and 12 speed road cassette - SRAM XD/XDR - Campagnolo 10-13 speed (freehub conversion kits available separately) Disc brake compatibility: 6-Bolt Spokes: DT Industry 2.0 SG Front: 28 spokes / 2x lacing Rear: 28 spokes / 2x lacing Nipples: 2.0 brass 12mm Weight: 1870g/set (650b) - 1996g/set (700c) - with rim strip installed Color: black