Trex-1000 Fast Load Bump Feed Trimmer Head fits Stihl Straight Shaft 4 1/2"
Rotary 17201 Bump Feed Trimmer Head

Description:  Trex-1000 is a fast load bump feed trimmer head. It can be used in two or four string configuration. Will accept string diameters from .080" to .115". Fits Stihl straight shaft trimmers.

Replaces OEM Part Number:  
Amcor: Trex-1000

Specs:  
ID: 10mm x 1.0mm LHF
OD: 4-1/2"