Mechanics and machinists, this magnetic base holder is an absolute workhorse for your shop! With 135 pounds of serious holding power, this thing stays put exactly where you place it - no slipping or shifting during precision work. The overall dimensions are 1-7/8 inches long by 2-3/8 inches wide by 2-1/8 inches high, making it compact enough for tight spaces but substantial enough to handle heavy indicators. Weighing in at 2.15 pounds, it's got that perfect heft that tells you it's quality-built without being overly bulky. The magnetic engagement is instant and powerful - just flip the switch and it locks onto any ferrous surface with incredible stability. This is a replacement base only, so it works with your existing dial indicators and other measuring tools. The build quality feels industrial-grade, not like those cheap imports that lose their magnetic power quickly. Whether you're working on engine blocks, machinery alignment, or any precision measurement task, this base provides that rock-solid foundation you need for accurate readings. The on/off mechanism works smoothly, and the magnetic field is strong enough to hold through vibration and minor impacts. If you're tired of wobbly setups or bases that can't handle the weight of your tools, this 135-pound capacity magnetic base is the solution you've been looking for!