Stihl 1123 640 7102 Worm Type_59L The classic wide pear shape

The classic wide pear shape makes it suitable for belay with clove hitch

Tighten pressure bolts on to chain bar to make cuts up to 18” wide and 1/2” to 13” deep

The simple construction is durable and easy to assemble on rope

Our Micro-Chisel cutters have small-radius working corners for excellent performance

Stihl 1123 640 7102 Worm Type_59L The classic wide pear shapeThe Oil Pump Worm Gear is a genuine Stihl replacement part specifically designed for small and mid size chainsaws, including the MS 170 and MS 180 models. Constructed from durable polymer and featuring a steel drive spring, this component effectively transfers rotation to the oil pump, ensuring a consistent flow of lubricant to the bar and chain. Replacing a worn or stripped worm gear with the Stihl Oil Pump Worm Gear restores proper chain oiling,