Adjustable Dumbbell Bundle 100% Steel – 4 to 20 kg + HRBD Adjustable Bar

Bundle contents

• 1 pair of 100% steel adjustable dumbbells, 4 to 20 kg, 1 kg increments (ref. HR-20P)
• 1 quick-change adjustable bar, 87 cm, 100% metal (ref. HRBD)
• Square plates shared between the dumbbells and the bar
• Expandable up to 65 kg per dumbbell with the extension kit (sold separately)

Two complementary loading methods

Working with two dumbbells requires each side to manage its own load, which helps correct asymmetries and places greater demand on the stabilising muscles. Barbell work, on the other hand, offers a more stable anchor point and better force transfer on a given movement. The two methods serve distinct objectives and benefit from being alternated within the same programme.

On the upper-body muscle groups the difference is particularly marked: dumbbell curl and barbell curl, Arnold press and military press, overhead extension and skull crusher recruit the same muscles through different angles and ranges of motion.

Plates shared between the two items

The HRBD bar uses the same square-plate system with safety pins and the same thumbscrew clamping mechanism as the HR-20P pair. Transferring the load from one support to the other takes a few seconds, with no specific tooling.

At 87 cm long and 11 kg unloaded, the bar remains usable in a restricted space and requires neither a rack nor a dedicated stand. As the plates are shared, the two items are used alternately. The full specifications of the pair are given on the 4 to 20 kg adjustable dumbbells page.

The other HR-20P configurations