The Lo-TRS is a floating tremolo with die cast saddles. The bridge is stamped and then hardened using heat treatment. Both the height and tension of the tremolo arm are adjustable. The Lo-TRS is a redesigned version of the original TRS-101 which doesn't protrude as far from the guitar body. The Lo-TRS II is a less expensive version of the Lo-TRS that was used in guitars made in Korea.