The utility model provides a sleeve, which comprises a sleeve body, a spiral spring and at least a bead body. The sleeve body has a first end, the first end has a through hole, a wall, a through hole formed on the inner wall of the through hole of the containing groove, and at least one through the micropyle grooves. The coil spring is arranged in the accommodating groove, and the spiral spring is provided with an axial and a plurality of elastic coils, and the elastic coils extend along the axial direction. The elastic coil of the bead body is arranged in the micropyle and the spiral spring are abutted and partially exposed the micropyle. Thus, when the sleeve is combined with or combined with the tool wrench, the tool wrench can be firmly connected with the tool wrench so that the tool wrench can reach the optimum rotating sleeve when the sleeve is pulled.
【技术实现步骤摘要】
【技术保护点】
一种套筒，其特征在于，它包括：一套筒主体，是具有一第一端，提供一工具扳手来套合，该第一端具有一通孔、一通孔内壁、一形成于该通孔内壁的收容槽、以及至少一贯通该收容槽的珠孔；一螺旋弹簧，设置于该收容槽内，该螺旋弹簧具有一轴向及多数个弹性线圈，该多数个弹性线圈沿该轴向所延伸形成；以及至少一珠体，容置于该珠孔内且受该螺旋弹簧的弹性线圈所抵顶而部分地露出该珠孔。
【技术特征摘要】
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