• Allows the 400 Base to support weights up to 75 lbs. (34.0kg) at 45"
• Recommended for use with the 437 Heavy Duty Fixturing Head
• Accepts any 1" (25.4mm) diameter shaft to a depth of 1.7" (43.2mm)
• Single knob controls head movement through 3-planes: 90° Tilt, 360° Turn & 360° Rotation
• Square base [4.125"x 4.125" (104.8mm x 104.8mm)] has four 0.3125" (7.9mm) mounting holes (mounting screws not included)
• A hole is provided in the bottom of the base for a 1/4-20 flat head screw to permanently attach any shaft
• Height: 3.25" (82.5mm)
• Weight: 1.5 lbs. (0.7kg)

For heavy duty projects requiring added holding power. Accepts any 1" (25.4mm) diameter shaft. Recent engineering changes allows the 400 base to hold up to 75lbs (34.0kg) at 45 degrees.