This is a OE TRW (Lucas/Girling) Front Brake Pad set for a XJ300 and XJS 95 & up (VIN# 198334 & up), OE# JLM21344 JLM11903, . These are the best pads that you can buy for your car. Each pad has an anti-squeal shim glued to the back of the pad for silent braking. As for composition each pad is made from Ceramic material for an almost dustless braking and helps with high temperature brake fade. No more black rims to clean on your car and youíll have confidence in braking. These Brake Pads are manufactured by TRW Automotive and have always been the benchmark for the European Aftermarket, as well as being the leading suppler of disc brake systems to vehicle manufacturers including Mercedes, Audi, Volvo, Suzuki, General Motors, Ford, Nissan, Toyota and Mitsubishi.