Like many reviews have said, I didn't even realize that my edger blade was so worn down until I measured the length (4'') compared to this 7 1/2' blade.  It fit perfectly for my&nbsp;<a data-hook="product-link-linked" class="a-link-normal" href="/BLACK-DECKER-LE750-12-Amp-2-in-1-Landscape-Edger-and-Trencher/dp/B00004DTNH/ref=cm_cr_arp_d_rvw_txt?ie=UTF8">BLACK+DECKER LE750 12 Amp 2-in-1 Landscape Edger and Trencher</a>&nbsp;Type 4 edger.  The instructions were simple enough and my edger works amazingly better with it on.  A very inexpensive purchase to revive my edger.