Drawer slide rail

A drawer slide rail, comprising:

• a longitudinal body;
• a pair of first sidewalls extending respectively from two sides of a front end portion of the longitudinal body;
• a pair of second sidewalls respectively connected to the first sidewalls and extending to a rear end portion of the longitudinal body, wherein the first sidewalls have a first height, and the second sidewalls have a second height greater than the first height;
• and
• a base mounted on the front end portion of the longitudinal body, the base including a supporting member, a first supporting arm, a second supporting arm, and a third supporting arm, wherein the first supporting arm of the base has a side pressed against a portion of a bottom portion of one of the first sidewalls of the longitudinal body, the second supporting arm of the base is pressed against a portion of a bottom portion of one of the second sidewalls of the longitudinal body, and the third supporting arm of the base is pressed against a lateral portion of one of the second sidewalls of the longitudinal body, and wherein the longitudinal body includes an opening corresponding in position to the supporting member of the base, and the supporting member is configured to extend through the opening so that a supporting position of the supporting member is adjustable with respect to the longitudinal body.