Dewalt Universal Edger Attachment. Compatible with DCST972 60V Split Boom Trimmer. This adaptable add-on will conveniently change your ATTACHMENT CAPABLE power head into an edger. Tackle a variety of tasks with a durable 7-1/2 in. hardened steel blade that can be adjusted to a depth of up to 2-1/2 in. to take on a wider range of work. Additional attachments are available to convert into other outdoor tools.