Model#: BDKNST4500

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Black & Decker ST4500 3.5 Amp 12 in. Straight Shaft Electric String Trimmer / Edger

  • Black & Decker ST4500 3.5 Amp 12 in. Straight Shaft Electric String Trimmer / Edger
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  • Groom N' Edge head rotates 180 degrees for edging
  • Powerful 3.5 Amp motor for superior trimming performance in heavy weeds and grass
  • 12 in. cutting path with bump-feed spool gets the job done fast
  • Built-in assist handle provides maximum comfort and control
  • Flip down edge guide assists with edging along sidewalks and driveways
  • Cord retention prevents trimmer from coming unplugged
  • Bump feed spool allows feeding of the line as needed
  • Gently bump the feed head of the trimmer on the ground to release a fresh length of line
  • 3.5 Amp 12 in. Straight Shaft Electric String Trimmer / Edger - ST4500
Compliance and Restrictions
warning: Cancer and Reproductive Harm --


Weight: 4 lbs.
Amperage: 3.5
Power Type: Electric
RPM: 10,000
Voltage: 120V


  • Trims grass in hard to reach areas where mowers cannot cut
  • Maintenance edging
  • Recommendations


    3.6 / 5.0
    19 Reviews
    5 Stars
    4 Stars
    3 Stars
    2 Stars
    1 Star
    Yes, I would recommend this to a friend (3)
    Powerful (3)
    Easy To Use (2)
    Lightweight (2)
    Satisfactory Product
    Very good value for the money. For small to medium sized yards. Would not recommend for rough or heavy work. I don’t know how Ling it will last, but so far satisfied.
    June 29, 2019
    Originally posted at
    Fabulous For Light Weed Eating
    I bought this last week because I accidently broke one just like it that I have used for years. I use it every week, Excellent for trimming grass & light weeds but don't expect it to handle a jungle. I have a walk behind trimmer for the heavy stuff at my daughters acre.
    June 12, 2019
    Originally posted at
    Simple trimmer that works great!
    It's a cheap, simple trimmer that gets the job done. Been using it around the (small) yard for about 5 years now and have had no issues. Nothing fancy, but works well and at the price point its really hard to complain about.
    May 13, 2019
    Originally posted at
    It serves its purpose for me!
    I brought this product recently from Lowe’s. I have a small yard and the weeds were growing like crazy, And I did not want to pull the weeds up with my hands. I did have a hard time with the instructions and was disappointed there was no cord. But I found an orange cord around the basement. After setting it up I started to use it. And it knocked down the weeds a the yard didn’t look like a jungle anymore! However when I tried using it around the sidewalk outside the yard. The line broke. And I had figured out how to pull out the line. But when I tried again it, broke again. So I guess the sidewalk weeds are thicker I don’t know. But I was more happy with the results of the yard.
    July 24, 2018
    Originally posted at
    Great for Light Work
    My last one of these just died after 8 years of use. I bought another one today. If you expect this small, affordable trimmer to be a brush hog, then get something else. If doing regular household edging and trimming, it works exactly as advertised.
    May 22, 2018
    Originally posted at
    Solid and well priced
    Great trimmer. Beats the heck out of the auto feed trimmers that just dump the trimming string out as you go. So glad I got this one; simple, effective, inexpensive. One summer of use so far and no issues.
    October 21, 2016
    Originally posted at
    Not as good as the older B & D I used to own
    This machine is lightweight and easy to move about compared with the older model I used, but, while it trims well, it does not edge well at all. It's a good thing I still have an older battery-powered model I can use for edging. I wish I had read the reviews first.
    July 17, 2016
    Originally posted at
    Yes, I would recommend this to a friend
    Easy To Use
    A wonderful purchase!
    Plenty of power to tackle even the toughest weeds and small brush. Line feed mechanism works very well. Have used for extended periods of time without any problems whatsoever! Only drawback--if there actually is one--is the need for an extension cord. A great value!
    May 18, 2016
    These used to be good
    350 amp weedeater/edger
    July 24, 2014
    Originally posted at
    This product work effortlessly for me.
    I didn't have ANY problems with this trimmer.
    April 17, 2014
    Originally posted at

    Questions & Answers

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    Browse 2 questions Browse 2 questions and 2 answers
    How do reaver the fan on the bump head or head itself????
    ?????? on Aug 3, 2016
    BEST ANSWER: For technical support, please contact Black & Decker directly 1-800-235-2000
    where can i buy bumber feed top in 133760 area code
    Tom on Jul 5, 2016
    BEST ANSWER: Please contact Black and Decker at 800-544-6986 for locations in your area


    Warranty Information

    Black & Decker Lawn & Garden Electric Tools

    Warranted for two (2) years from date of purchase. This warranty does not cover damage resulting from negligent handling, misuse or lack of reasonable maintenance and care. (Proof of purchase maybe required).