Bosch Twin metal bow wiper: the optimum solution for conventional wiper technology The robust full metal bow system with dual corrosion protection is extremely resistant in all weather conditions and the Twin Spoiler for best wiping performance even at high speed. - Perfect cleaning thanks to the dual-material technology of the wiper rubber with smooth-running coating - Longer service life thanks to the wear-resistant micro double edge of the wiper rubber - Long-lasting safety thanks to the robust full-metal bracket system with double corrosion protection - Particularly easy installation thanks to pre-mounted Quick-Clip universal adapter - Best wiping performance, even at higher speeds.