Jaw Crusher Accessories. ESCO also offers jaw crusher accessories, including toggle plates, toggle seats, cheek plates, jaw wedges, liner kits, and other wear parts. Curve Options ESCO crushing specialists can recommend various curve options to get the most out of jaw crushers. ESCO Alloy 14G (GT2000) Jaw Crusher Cheek Plates Kenco Engineering tungsten carbide impregnated Cheek Plates provide the solution to wear problems encountered with jaw-type crushers. In many crushing applications, factory-style manganese cheek plates do not get sufficient impact to work harden.