The ETBB48 is an offset C-channel tungsten bucking bar for backing rivets along a raised edge or flange a flat bar cannot straddle. At 3.25 lb and 3 x 2.2 x 1.1 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 machined channel with a chamfered corner lets the bar sit over a flange or land while dense tungsten backs the rivet tail squarely. At roughly 2.5 times the density of steel it holds the work without bouncing for clean shop heads.
- Dimensions: 3 x 2.2 x 1.1 in
- Weight: 3.25 lb (heavy)
- Shape: Offset
- Best-fit access: raised edges, flanges, and channels
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Questions about this bar
What is the ETBB48 tungsten bucking bar used for?
The ETBB48 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 ETBB48 bucking bar weigh and what size is it?
The ETBB48 weighs 3.25 lb and measures 3 by 2.2 by 1.1 inches. You buy a bucking bar by weight, and tungsten packs that weight into a far smaller block than steel.
Why is the ETBB48 made of tungsten instead of steel?
Tungsten alloy is about 2.5 times denser than steel, so the ETBB48 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.
