Tremolo unit and saddle

A tremolo unit comprising:

• a base plate arranged at a surface of a string instrument;
• a saddle attached at a surface of the base plate;
• an arm attaching part arranged at a surface of the base plate;
• and
• a block fixed on the base plate and extending along a plate thickness direction on a back side of the base plate,
• wherein the block includes a string ball locking part through which a string is inserted and on which a string ball is locked,
• wherein the saddle includes a saddle main body and a string pressing member rotatably attached to the saddle main body,
• wherein the saddle main body includes a string inserting part through which a string is inserted from the block side and a string receiving part at which a string drawn from the string inserting part to a neck side of string instrument is received,
• wherein the string pressing member is supported in a condition in which a supporting part is rotatably supported in order to enable an end part of the neck side of the string receiving part side to approach closer and be further away from the string receiving part,
• wherein at an end part opposite to the neck side of the string pressing member, an operating part is arranged which makes the end part move away from the saddle main body by pressing the saddle main body, and
• wherein the string receiving part includes an inclining surface which is a rising slope toward the neck side, and a top part of the string pressing member has a shape fitting to the inclining surface.