The Sapim Spoke Nipple 14G Brass Upside-Down Internal Nipple is an innovative brass nipple with an inverted design, specifically for internal wheel building where the nipple head sits inside the rim for a sleek, aerodynamic finish.

 Product specifications
 Made of robust brass for high strength and corrosion resistance, suitable for 14G spokes (2.0mm thread) and rims with 3.4-4.0mm holes. Inverted design with a short overall length (approx. 10-12mm) and an internal six- or square-headed nipple for tensioning from the inside, without external tool marks. Weight per nipple is around 0.8-1 gram, ideal for lightweight racing and high-end wheels.

 Benefits for wheel builders
 This design minimizes air resistance and protects the nipple from dirt and impacts, perfect for road, time trial, and track bikes with high-pressure requirements. The internal grip prevents rim and spoke end damage, while the brass provides durability for e-bikes and heavy-duty use. Excellent for custom wheel building with a clean look.