Plasto Shock is a liner with ceramic and polyurethane. Not high impact but very wear resistant.
For big impact resistance the ceramic is mould in rubber 45º.
Both versions come with welded stud-bolts, for easy fitting.
Plasto Ceram with pre-coated (tacky back) rubber, in different thicknesses. Or vulcanized on a steel sheet, with or without stud-welded bolts.
Ceramic, AL2O3, aluminum oxide, is very high abrasion resistant.