C-hook. The C-hook can be designed for various coil sizes. The rated lifting capacity is 3.2t, 5t, 10t, 16t, 25t, 32t, etc. 3. Slab tongs – designed for moving various slabs. The slab clamp adopts lever type working principle. Slab Tongs. 4. Round ingot tongs – used to move round ingots in the horizontal position.