Product Review

Brand new, never used, blade attachment kit for Stihl brand string trimmers.
Aftermarket part, not OEM
This is what you need to attach different types of blades to your string trimmer.
This kit includes the splined washer, rider plate, collar nut, tune-up / maintenance screwdriver.(can also be used for a stop pin needed to hold the head to tighten and loosen).

Specification:
Condition: 100% new
Material: Plastic + Steel
Screwdriver Size: 128 mm
Rider plate diameter: 80 mm
Collar Nut Diameter: 25 mm
Thrust Washer Diameter: 42 mm
Other Size as the Picture Shown
Compatible With: fit for Stihl String Trimmer

Package include:
1 x Thrust Washer
1 x Rider Plate
1 x Collar Nut
1 x Screwdriver