Rear disc hubs (front and rear) made from iron steel with a smooth silver finish. Engineered for reliable wheel builds and broad bike compatibility. Key benefits Durable construction: iron steel body provides strength for regular riding and longer service life. Easy freewheel attachment: screwend nutted axle design lets you install and secure a freewheel quickly and without special tools. Precise spoke layout: rear hub features 36 round spoke holes for consistent, balanced lacing and stable wheel performance. Broad compatibility: fits a range of bicycle types — MTB, road bikes, fixedgear, and vintage/oldschool bikes. Specifications Rear hub: 36 spoke holes, total length 175 mm, weight 380 g. Front hub: total length 140 mm, weight 190 g. Material: iron steel with smooth silver surface treatment. Axle: screwend nutted axle for freewheel installation. Practical applications a worn rear hub on an MTB to restore wheel strength for trail use. Build or a commuter road wheel where reliable freewheel installation and straightforward maintenance matter. Restore or convert an oldschool or fixedgear bicycle, using the 36hole rear hub for traditional spoke lacing patterns. Installation and use notes The screwend nutted axle is designed for straightforward freewheel mounting — attach and tighten the freewheel and secure the axle nuts. Verify hub spacing and axle length match your frame and wheel rim before installation to ensure proper fit. Straightforward, durable hubs suitable for , restoration, or wheel builds across multiple bike types.