Trimmers Edge Guides 90571331, Replacement string trimmer edge guide 90571331C 98020SE. Replace Craftsman Lithium Ion powered edger guide. Use Trimmers Edge Guides as an edge guide for your lawn or to protect flowers and trees from cut line damage. Compatible with Black & Decker Model: LST136, LST540, LST540B, LST136B, LST140C and CMCST98020E1, CMCST910M1-CA, CMCST910M1, CMCST98020E1-CA. Made of high quality stainless steel material, sturdy and durable. Easy to install, no tools to assist, just remove the old side rails and reinstall the new side rails. Our goal is to give users a good shopping experience, if you have any problems in shopping and use, please email us in time, our staff will help you solve within 24 hours. Replacement Part Number: 90571331, 90571331C, 98020SE.