So far so good; Will not crack after the first few uses. The original hose on my grease gun finally failed after 50 years of use (yes really) and it was a direct replacement. The threads were a bit caked and the new hose didn't screw in as easily as the old one came out, but it was still hand-tight to the last quarter turn. The same goes for attaching the old head to the new hose. The flex feels the same as mine, which I like. It's flexible enough to get into fairly tight spaces, but stiff enough to hold the Zerk in place by simply squeezing the hose. I'm happy with that. Higher quality threads would have made it 5 stars, but the threading issue is really tiny.
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