110Lbs of permanent magnetic holding power With On/Off switch Base dimension: 2.28"L(58mm) x 1.96"W(50mm) x 2.16"H(55mm). Fitted strong plastic box 110 lbs Holding Power: Offers strong, permanent magnetic hold for precise measurements and setups in industrial applications. Fine Adjustment Feature: Allows for micro-adjustments to achieve optimal positioning and alignment of indicators. On/Off Magnetic Switch: Facilitates easy attachment and removal from metal surfaces, enhancing convenience and safety Compact and Durable Design: Dimensions of 2.28"L x 1.96"W x 2.16"H, constructed to withstand rigorous use in professional environments. Protective Packaging: Comes in a fitted strong plastic box, ensuring the tool's safety during storage and transport.