This welded, tubeless ready workhorse is a go-to rim for XC to aggessive all-mountain with a range of rim widths to suit every riding style. Tubeless ready with strong tire retention bead. The Manufacturer Spec ERD specification listed uses the less common “ERD+” method. ERD+ is the manufacturer listed diameter of the rim at the spoke nipple seat and does not account for the height of the spoke nipple shoulder when calculating spoke length. If unfamiliar with this system of measurement physically measure ERD yourself prior to committing to a spoke length. Aluminum rim and welded seam for excellent strength with minimum weight. Color: Black. Hub Drilling: 28. Rim Depth: 20. Valve: Presta. ISO Diameter: 584 / 650b / 27.5". Wheel Size: 27.5". Tire Type: Tubeless Ready. Rim Joint: Welded. Brake Track: None. Defined Color: Black. Rim Width (External): 39. Rim Material: Alloy. Rim Width (Internal): 35.