按钮开关式磁性表座（4边磁）

Kennedy® Mag Stands

With four magnetic faces (one at 45°). Heavy duty with universal clamp. 
Mounts: 1/4" I/D lug, stem/spigot diameter: 1/4", 5/16".
Base dimensions: 64 x 64 x 76mm.
Column height x diameter: 266 x 20mm.
Crossbar length x diameter: 200 x 14mm.
Magnetic pull: 80kg.
Overall height: 380mm.

Major 4 Mag Stand