Anti-reverse mechanism (9) furnished with graspers (52) that under friction with the ratchet wheel (50) urge the ratchet pawls (51), to keep the graspers (52) from being deformed when the spool shaft (2) is removed/attached. The anti-reverse mechanism (9), for drag operation in a dual-bearing reel, is furnished with a ratchet wheel (50), ratchet pawls (51), braces (55), and graspers (52). The ratchet wheel (50) has a plurality of saw-teeth (50a) and is fitted non-rotatably, yet permitted axial shift, to a friction disk (36) co-operational with the spool (3). The ratchet pawls (51) are mounted to a side plate (10) pivotally between a contact posture where their leading ends contact the saw-teeth (50a), and a separated posture where they are parted away from the teeth (50a). The braces (55) are provided on the side plate (10), and brace the ratchet wheel (50) against the side plate (10). The graspers (52) are fitted to the ratchet wheel (50), and urge the ratchet wheel (50) toward the separated posture when the ratchet wheel (50) is rotated in the line wind-in direction, and urge it toward the contact posture when it is rotated in the line reel-out direction.