GEM Magnetic Base With Push Button On-Off - 500FA

• The model 500FA has a 3/8" center post 7-1/2" long, mounted on a rigidly-locking ball joint, plus a fine adjustment on the center post.
• It includes a base measuring 1- 7/8" x 1-7/8" x 1-5/8" with three ground surfaces for sure gripping in any direction, plus a V-slot for round surfaces and an on-off push button release.
• The 1/4" cross bar is 7" long, and has an adapter for AGD (lug-back) indicators.