Pro Head nipples will align automatically with the spoke angle due to the spherical contact surface Designed for short spokes with a large angle of deflexion such as e-bikes The special shape of the head prevents the nipple of tilting in the rim base, which is a great advantage for wheel building 14mm version can be used in place of alloy Squorx Pro Head nipples when building DT rims that require Prohead nipples and washers (PHR washer is still required) Material: Brass Length: 12mm or 14mm Spoke Diameter: 2.0mm (14 gauge) or 2.34mm (13 gauge) Sold individually 32 brass nipples weigh approximately 30 grams