| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a through sleeve capable of being efficiently and easily attached to a through hole of a wall while avoiding an obstacle within a wall body.SOLUTION: A through sleeve S for insertion of a long body is attached to a through hole formed in a compartment. At least a part in the direction of the axial center of the sleeve is provided with a variable cylinder part C capable of freely changing a cross-sectional shape.</p> |
