Stihl 4002 713 3017 Spool Insert Blades this durable polymer cap prevents

this durable polymer cap prevents foreign debris from entering

it includes a four spring anti-vibration system

Fits the following products: Sentei 21' (4177-39)

this fastener supports safe and dependable operation during various cutting tasks such as felling

When the job demands accurate cuts with unmatched speed and endurance to run all-day without downtime

Stihl 4002 713 3017 Spool Insert Blades this durable polymer cap preventsThis genuine Stihl spool insert is the internal reel for the AutoCut 25 2 trimmer head, used on Stihl grass trimmers and brushcutters. It is moulded from durable, impact? resistant plastic to handle regular use and exposure to debris. The insert holds and guides the cutting line so it feeds smoothly and consistently, helping the head bump and release line as designed.