Complex sentence: The main types of nipple clamp are the "clover clamp" and "tweezer clamp", but common household clothes-pins are also sometimes used, though any device that applies direct pressure can be used.
Split into simpler sentences: The main types of nipple clamp are the "clover clamp" and "tweezer clamp". The common household clothes-pin is also sometimes used, though any device that applies direct pressure can be used.