JN Engineering offers a wide range of concave (bowl liner) and mantle suit Metso Symons cone crushers, including:
Standard Extra Coarse
Standard Coarse
Standard Medium
Standard Fines
Short Head Coarse
Short Head Medium
Short Head Fines
Short Head Extra Fines

All JN Engineering mantles and concaves are made of manganese steel 18% Mn and 2% Cr, which give you the benefits:
Improved reduction
Cubic product shape
Even wear
Maximum life time and utilization
Lower overall operating costs

JN Engineering manganese crusher parts are available to suit
Symons series:
3 FT, 4-1/4 FT, 5-1/2 FT, 7 FT, 8-1/2 FT