Column Cut-Off Adapter CMS261W This accessory attaches to Chief extension columns that have been cut to length. Features Bolt-on coupler to add 1.5" NPT threads to a Chief extension column that has been cut to a shorter length 2" (51mm) height added to installation Set screws and bolts included for security and stability Specifications Color: White Overall Dimensions (H x W x D): 4.5" x 2.3" x 2.3" (114 x 59 x 59 mm) Weight Capacity: 500 lbs (226.8 kg)