Prestacycle 1/4" Schrader Hose Barb, Bike Pump Accessoires USAGE - upgrade your floor pump or tankless electric inflator to use Prestaflator heads and accessories. MATERIAL - Made with 6061-T6 Alloy  Strong as Brass and only 1/3 the weight. COMPATIBILITY - Standard barb fits 1/4 inner diameter hose. NOTE - Hose clamp not included. The correct hose clamp varies based upon the outer diameter of your pumps hose. QUALITY: Prestacycle isdedicated to putting new ideas and innovations in the hands of cyclists. As life-long cyclists, we understand its about riding and actually being on the ride. We make products to do the right job quicker, and give you more time in the saddle. Upgrade your floor pump or tankless electric inflator to use Prestaflator heads and accessories. Made with 6061-T6 Alloy  Strong as Brass and only 1/3 the weight. Standard barb fits 1/4 inner diameter hose. Hose clamp not included. The correct hose clamp varies based upon the outer diameter of your pumps hose. Prestacycle isdedicated to putting new ideas and innovations in the hands of cyclists. As life-long cyclists, we understand its about riding and actually being on the ride. We make products to do the right job quicker, and give you more time in the saddle.