- 1-1/2" Square Expanding Adapter Stem
- 1.426" to 1.589" Expansion Range
- Fits on 1/2"-13 x 2-3/4"(+) Treaded Stem Caster
- Zinc Plated Bottom Washer
- Plastic Support Piece
- Rubber Expander
- Square Metal Nut Threaded
- Square Metal Washer
Used in combination with 1/2" stem caster to hold caster inside of square metal tubing. Commonly used on metal work tables in restaurants