The ETBB25 is a contoured tungsten bucking bar for backing rivets in sockets and corners that need mass on a small, shaped face. At 3.15 lb and 3 x 1.75 x 1.438 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 barrel head on a narrow neck and stepped base concentrates tungsten mass at the working face while the foot gives a stable grip. At roughly 2.5 times the density of steel it stays planted under the gun.
- Dimensions: 3 x 1.75 x 1.438 in
- Weight: 3.15 lb (heavy)
- Shape: Offset
- Best-fit access: sockets, corners, and confined access
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Questions about this bar
What is the ETBB25 tungsten bucking bar used for?
The ETBB25 is a heavy tungsten bucking bar for larger rivets and thick structure, delivering maximum backing mass in a hand-held bar. Hold it flat and square against the rivet tail so the shop head forms evenly.
How much does the ETBB25 bucking bar weigh and what size is it?
The ETBB25 weighs 3.15 lb and measures 3 by 1.75 by 1.438 inches. You buy a bucking bar by weight, and tungsten packs that weight into a far smaller block than steel.
Why is the ETBB25 made of tungsten instead of steel?
Tungsten alloy is about 2.5 times denser than steel, so the ETBB25 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.
