Nnụnụ spikes nwere 304 igwe anaghị agba nchara waya na UV eguzogide polycarbonate base, nke na-adịgide adịgide ihe karịrị 10 afọ.
A na-eji spikes nnụnụ eme ihe na : Ledges, parapets, sign, ọkpọkọ, chimni, ọkụ, wdg.
Ọ dị mfe ịwụnye n'elu ụlọ na gluu ma ọ bụ ịghasa.