Narrow refills are designed to fit original equipment twin rail bladesIncludes metal rails for ease of installationAvailable in 13 sizes from 16-inch to 28 -inchPrecision cut extruded rubber element ensures superior wiping action. Easy to installThese 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 properlyPrecision cut extruded rubber element ensures superior wiping actionEasy to installThe 45 Series refills are designed to fit original equipment twin rail blades using the square claw design.