M6-1.00 x 25

If the thread on the bolt of your weed eater’s gearbox assembly is shorter than 10mm with the dust cup in place, then we recommend that you replace your dust cup with a steel blade adapter (Echo part# C535000100 for Echo/Shindaiwa) to allow more tightening of the bolt.

You can find an appropriate centerlock nut at your local outdoor power equipment dealer for a cheap price.

Trimmer must run Counter-Clockwise for Tri-Clone™ Trimmer Head to work.

Straight-Shaft Gas Trimmers: Craftsman Cub Cadet, Echo*, Honda, Hitachi, Homelite, Husqvarna, John Deere, Jonsered, Makita, Maruyama MTD, Redmax, Shindaiwa*, Stihl, TMC, Troy-Bilt

*requires a steel plate adapter (Echo part# C535000100).

Straight-Shaft Lithium Battery Powered Trimmers: DeWalt DCST990M1 40V String Trimmer, ECHO V58, Milwaukee M18 Fuel String Trimmer, Husqvarna 536 LiLX, Ryobi 40V X Lithium-Ion String Trimmer, Stihl FSA 130 R

See more information on FAQ section.

Not much! It weighs only 1.2 lbs, and it’s also designed to sit on the ground, so users don’t have to constantly hold it up while operating.

No, you never have to sharpen the blades. They’re self sharpening blades.

This is determined by what you choose to cut with the Tri-clone Trimmer Head. Typically, they last around a year if it is for residential use. For commercial use, they can last up to 6 months.

We understand the danger of blades flying out of the housing while operating, so the Tri-clone Trimmer Head has double reinforcements on what holds the blades in place, meaning it has the bolt and the metal tubing around the bolt which both hold each blade to prevent it from flying out while operating. Therefore, all of the bolts need to completely come out at the same time, allowing the bottom of the housing to drop a quarter of an inch.

The blades are made of SK-51, in other words, high strength steel.

Tri-clone Trimmer Head is versatile and can be used to cut grass, bushes, and trees(up to 3 inches diameter) with minimum effort. Please refer to our YouTube videos to see what types of plants can be cut with the trimmer head.