The ETBB44 is a low-profile saddle tungsten bucking bar for backing rivets along a raised bead or curved feature in tight access. At 1.45 lb and 2.1 x 2 x 0.8 inches, it brings the backing mass of a much larger steel bar to the rivet, so shop heads form clean with less shock to your hand.
A shallow channel with an angled lip cradles the work while dense tungsten backs the rivet tail from below. At roughly 2.5 times the density of steel it brings real backing mass to a small, shallow tool.
- Dimensions: 2.1 x 2 x 0.8 in
- Weight: 1.45 lb (light)
- Shape: Low-Profile
- Best-fit access: beads, tubes, and curved features
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Questions about this bar
What is the ETBB44 tungsten bucking bar used for?
The ETBB44 is a low profile tungsten bucking bar for thin, confined gaps and shallow bottom-skin access, slipping into a space a taller bar will not enter. Hold it flat and square against the rivet tail so the shop head forms evenly.
How much does the ETBB44 bucking bar weigh and what size is it?
The ETBB44 weighs 1.45 lb and measures 2.1 by 2 by 0.8 inches. You buy a bucking bar by weight, and tungsten packs that weight into a far smaller block than steel.
Why is the ETBB44 made of tungsten instead of steel?
Tungsten alloy is about 2.5 times denser than steel, so the ETBB44 delivers the same bucking mass as a steel bar more than twice its size. The compact mass means better access in tight structure and less shock to your hand.
