This 1-1/2" Prop Washer has a "Dual Bolt Pattern" for Adaptability to most of the Old Sachs Conversion Motors. It is tapped 10-32 in the Center Boss Hole for a Tru-Turn Cone Screw.
This Prop Washer is made from Heat Treated 17-4 PH Stainless Steel and is many times stronger than most OEM washers.
When your Prop Washer becomes Worn or Bent, this is the way to go.
Be sure you match your Bolt Circle for Proper Fit.
Prop Washer 6+6 - BOLT 7/8" & 1-1/8" B.C.