If your table or table has already been drilled, please note that the inside diameter (where the bushing should "butt") is 50mm, not 2". others have stated (including me before) that the inside diameter is 1-7/8 inches. This is for the "base" but the "barrel" tapers to 50mm and the bore is 1-7/8" not wide enough to fully install the jack. If your table doesn't already have one hole, if you have the time you should probably get your hands on the bushing before you start cutting!Measure twice, cut once.The "insertion point" is as said the most important one which is 50mm , just under two" (1.97"). Also, I would recommend using a Forstner bit (if the table is wood) instead of a saw hole - more precise and smooth. Ideally, 50mm, 2" will do.
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