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2. Dumbbell - Wikipedia

   en.wikipedia.org/wiki/Dumbbell

   Selectorized dumbbells A set of fixed-weight dumbbells. By the early 17th century, the familiar shape of the dumbbell, with two equal weights attached to a handle, had appeared. [8] There are currently three main types of dumbbell: Fixed-weight dumbbells are weights created in a dumbbell shape.

3. Weight plate - Wikipedia

   en.wikipedia.org/wiki/Weight_plate

   Weight machines commonly use specialized sets of plates (called "weight stacks"), consisting of a set of rectangular plates mounted on rails. Through a cable and pulley system, the burden is transferred to the machine's user. By placing a pin in the stack that causes the cable to pull on each plate above the pin, the weight is selected.

4. Power rack - Wikipedia

   en.wikipedia.org/wiki/Power_rack

   A power rack (also known as a power cage, squat cage or squat rack) is a piece of weight training equipment that functions as a mechanical spotter for free weight barbell exercises without the movement restrictions imposed by equipment such as the Smith machine. Its general design is four upright posts with two adjustable horizontal bar catches ...

5. A Top Trainer Shared 10 Picks for the Best Dumbbell ... - AOL

   www.aol.com/top-trainer-shared-10-picks...

   Jeff Cavaliere explains how a pair of dumbbells can help you build full body strength and muscle, breaking down 10 exercises for all muscle groups. A Top Trainer Shared 10 Picks for the Best ...

6. 19-inch rack - Wikipedia

   en.wikipedia.org/wiki/19-inch_rack

   The industry-standard rack cabinet is 42U tall; [1] however, many data centers have racks taller than this. [2] The term relay rack appeared first in the world of telephony. [3] By 1911, the term was also being used in railroad signaling. [4] There is little evidence that the dimensions of these early racks were standardized. Telephone ...

7. Barbell - Wikipedia

   en.wikipedia.org/wiki/Barbell

   The total weight of the barbell varies based on the type and number of plates loaded onto the ends of the bar and the lift being performed, and easily can be 540 kilograms (1,190 lb) or more with a squat dedicated bar (which itself can weigh up to 29 kg (65 lb) and have up to 35 mm (1.4 in) grip section diameter).