Trico 45-170 Narrow Wiper Blade Refill - 450mm (1 Refill) Narrow refills are designed to fit original equipment twin rail blades Includes metal rails for ease of installation Available in 13 sizes from 16-inch to 28 -inch Precision cut extruded rubber element ensures superior wiping action. Easy to install These refills are manufactured to fit the original equipment wiper assembly, If this assembly has been replaced with anything other than an OE product the refill may not fit properly Narrow refills are designed to fit original equipment twin rail blades Includes metal rails for ease of installation Available in 13 sizes from 16-inch to 28 -inch Precision cut extruded rubber element ensures superior wiping action Easy to install