I sent in 9 heads that I had accumulated from years of use. Some were only slightly bent, others were mangled from prying out of trees or from rocks on a pass through or miss. No questions asked, and I recieved 9 brand new heads in replacement, and it cost me less than $4 to ship. The smaller bleeder on the Magnus stingers opens the hole up just enough for a clean pass of the shaft, and because of this, may actually increase penetration. Great service, made in the USA, great blood trails with quick clean kills, and an unconditional lifetime guarantee. And they fly great and spin true. Pretty hard to beat! Thanks for your service!