The ETBB51 is an offset stepped tungsten bucking bar for backing rivets beside a raised heel or flange that a flat bar cannot clear. At 2.05 lb and 1.75 x 2.5 x 1 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 raised heel steps down through an angled flange to a low base, so the bar backs a rivet next to an obstruction while dense tungsten stays behind the tail. At roughly 2.5 times the density of steel it seats firmly for clean shop heads with less recoil.
- Dimensions: 1.75 x 2.5 x 1 in
- Weight: 2.05 lb (medium)
- Shape: Offset
- Best-fit access: raised heels, flanges, and stepped structure
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Questions about this bar
What is the ETBB51 tungsten bucking bar used for?
The ETBB51 is a offset tungsten bucking bar for stepped and recessed structure, where the offset steps the working face away from an obstruction to reach the rivet. Hold it flat and square against the rivet tail so the shop head forms evenly.
How much does the ETBB51 bucking bar weigh and what size is it?
The ETBB51 weighs 2.05 lb and measures 1.75 by 2.5 by 1 inches. You buy a bucking bar by weight, and tungsten packs that weight into a far smaller block than steel.
Why is the ETBB51 made of tungsten instead of steel?
Tungsten alloy is about 2.5 times denser than steel, so the ETBB51 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.
