UCINNOVATE Grass Trimmer Line 105ft, Nylon Steel Weed Eater String 3.0mm Round Wire for Garden Trimmers, Brush Cutters (Grey)

What It Is

This is a 105-foot spool of 3.0mm round nylon-steel composite trimmer line, designed for gas and electric brush cutters and string trimmers that accept a 3.0mm diameter line. The steel reinforcement adds durability for heavy-duty cutting against thick weeds, brambles, and woody growth.

Fitment & Compatibility

Before buying, confirm your trimmer’s line diameter requirement (check the manual or existing line). This is 3.0mm round – not compatible with trimmers that require 2.0mm, 2.4mm, or 2.65mm line. It works with most straight-shaft and curved-shaft trimmers that accept universal round line, including brands like Echo, Stihl, Husqvarna, Ryobi, and Craftsman. Not compatible with bump-feed heads that require pre-wound spools – you must hand-wind this line onto a compatible spool or use a fixed-length system. For brush cutters with metal blades, this line is a lighter alternative but not a replacement for a blade.

Key Things to Know

• Steel-core line is aggressive – it cuts through thick brush but can damage soft surfaces (e.g., plastic fence posts, painted siding, tree bark). Use with care near delicate areas.
• Hand-winding required – you’ll need to cut and wind the line onto your trimmer’s spool. It’s not pre-wound. Expect 5-10 minutes for the first spool loading.
• 3.0mm is heavy – may cause vibration or reduced runtime on smaller electric trimmers (under 12-amp). Best for gas or high-torque electric models.
• Noise and kickback – steel-core line is louder and can snap back if it hits hard objects. Wear eye protection and long pants.

Should You Buy It

Buy this if you have a gas or high-powered electric trimmer that accepts 3.0mm line and you regularly battle thick weeds, blackberries, or saplings. Skip it for light grass trimming near gardens or flower beds – the steel core is overkill and risks damage. At this price for 105 feet, it’s a solid value for heavy-duty users who don’t mind hand-winding.