Stihl AutoCut 40-2 trimmer head with 2.7mm cutting line suitable for mowing grass around obstacles and light vegetation. This Stihl head holds double or quadruple line for mowing and thinning. The nylon cutting line is automatically readjusted when the cutting head is tapped against the ground. Can be used with pentagonal. round or square 2.7mm nylon line.

Fits Stihl models:

FS310. FS400. FS450. FS480

Only approved for use with guard