Sleeve for reversible cutting tool

A combination comprising:

• a reversible cutting tool with two cutting ends;
• a block holder with a bore;
• and
• a sleeve inserted into the bore in the block holder,
• wherein the sleeve includes:
• a body with a bore longitudinally therethrough from a first end to a second end, the bore defining an inner surface;
• a shoulder on the first end, the shoulder having a contact surface;
• and
• two grooves on the inner surface of the bore,
• wherein the two grooves are longitudinally spaced apart, each groove extending laterally of the longitudinal direction of the bore for only a portion of a lateral thickness of the body.

A sleeve for inserting into a bore in a block holder of a cutting tool, the sleeve comprising:

• a body with a bore longitudinally therethrough from a first end to a second end, the bore defining an inner surface;
• a shoulder on the first end, the shoulder having a contact surface;
• at least one groove on the inner surface of the bore, wherein the at least one groove is located at least partially above a plane defined by the contact surface;
• and
• a second groove on the inner surface of the bore, wherein the second groove is longitudinally spaced apart from the at least one groove,
• the at least one groove and the second groove extending laterally of the longitudinal direction of the bore for only a portion of a lateral thickness of the body.

A combination comprising:

• a reversible cutting tool with two cutting ends;
• a block holder with a bore;
• and
• a sleeve inserted into the bore in the block holder,
• wherein the sleeve includes:
• a body with a bore longitudinally therethrough from a first end to a second end, the bore defining an inner surface;
• a shoulder on the first end, the shoulder having a contact surface;
• at least one groove on the inner surface of the bore, wherein the at least one groove is located at least partially above a plane defined by the contact surface;
• and
• a second groove on the inner surface of the bore, wherein the second groove is longitudinally spaced apart from the at least one groove,
• the at least one groove and the second groove extending laterally of the longitudinal direction of the bore for only a portion of a lateral thickness of the body.