• 30 lb (133 N) of holding force
• Base Diameter is 1.180" (30mm)
• Base Height is 1" (25.4mm)
• Overall Height is 4.173" (106mm)
• Holds indicators with 3/8" stems or standard dovetail mounts
• Fits over spindles and posts with diameter of 1/4" (6.3mm)
• Includes an 8mm adapter for indicators with metric (8mm) stem

The Starrett 661 Mini Magnetic Tool Holder is a simple, versatile, effective and economical tool for a variety of indicator holding tasks. It has no levers or switches - simply place the holder on the measuring surface, attach the indicator and position as required.