쿨러부 기둥 확장 세트

My kid's marble track was stuck at ground level until I added these, and now it snakes up over the couch. The six columns are sturdy enough that the whole thing doesn't wobble when he bumps it. Four sleeves was just enough for our setup, though I could use a couple more.

The connector sleeves hold the columns firmly in place, making it easy to build taller runs without wobbling. My kids have been experimenting with steeper drops ever since.

My toddler was thrilled when we added these columns—now the marble run has actual height and drops. The connector sleeves snap on securely, so nothing wobbles.