Rigger Skates Straight-line, Up to 100 tons per skate View More ». Uneven Floor Skates For ramps & uneven ground. Capacities: up to 50 tons. View More ». 3-Point Machine Skates Freely steerable. For loads up to 160 tons. View More ». Tandem Machine Skates For the moving of uneven loads. Capacities: up to 60 tons.