Description

A fully engineered replacement for trimmers that use a 10 mm x 1.0 LHF size arbor.
Hammerhead Performance Trimmer Heads are the toughest trimmer heads on the planet.

With 4 different styles and 13 different models there is a Hammerhead Performance Trimmer Head that will fit 90% of all trimmers, the exclusion being trimmers with extended spindles or model exclusive original parts.
This model is a likely fit for your STRAIGHT SHAFT trimmer made by Stihl, Jonesered, Robin, Craftsman and others.
PLEASE MAKE SURE THIS MODEL WILL FIT YOUR TRIMMER BY USING OUR PART LOOKUP system.
Model HH-QS450-10100 features:
Ultra Tough Nylon component construction for rugged durability and extended wear life.
Quick Spool reloading for 22 second line loads.
Works on STRAIGHT SHAFT trimmers only.
Fits receiving bolts sized to accept a 10 mm x 1.0 LHF arbor.
Capacity: 19′ x .080 dia. 16′ x .095 13′ x .11 dia.
Outer diameter: 4.5″
Height: 2.875″
Weight: 13.25 oz
UPC:860369000352
LIFETIME REPLACEMENT COVERAGE.

All Hammerhead Performance Trimmer Heads have lifetime replacement coverage starting with our one year full warranty for manufacturers defects and continued through our lifetime low cost, part replacement program.

What makes Hammerhead Performance Trimmer Heads a tougher part than your original trimmer head (or other)?

• All nylon parts are not created equal ⋅ Typical OEM trimmer heads contain a nylon reinforced with glass fillers. In contrast, Hammerhead Performance Trimmer Heads use a high-grade, nylon. One strengthened with an elastic formula designed to distribute impact force. As a result, Hammerhead performance trimmer heads can withstand higher levels of impact stress, longer terms of abrasive wear 500 times beyond ISO shock test standards.
• A better fit—right out of the box ⋅ Hammerhead performance trimmer heads set a higher standard. When we make trimmer heads, each part measures within tenths of millimeters from each other — meaning a glove-like fit and no fiddling with stubborn parts.  No struggle to put together a trimmer head. With Hammerhead all parts slide together smoothly ever single time.
• A wobble free arbor ⋅ Hammerhead performance trimmer heads bolt to a high-strength cast aluminum alloy center arbor. A better way to attach a trimmer head. While all other trimmer heads provide a universal “bag of bolts” and ask you to pick out one that fits okay. Hammerhead has a large center arbor that is balance checked for an accurate and smooth spin. One specifically sized to your trimmer’s receiving bolt.
• Superior debris protection ⋅ Trimmer heads fail when dirt and grit get inside. Debris that will quickly wear the moving parts that advance the line. Hammerhead’s large, overlapping interior walls interlock and block foreign matter from entering critical mechanisms.