black diamond product sku engine 208cc briggs cylinder splitting force log length cycle time >25ton plack diamond free assembly & fluid $90 value free ovec black amond product sku engine splitting force log length cycle time 250cc briggs cylinder 3oton black samono free assembly & fluid $90 value free ελεκ σιδμονο splitting force log length product sku engine 306cc briggs cylinder 5" x 24.1" cycle time black 35-ton free assembly & fluid $90 value free