309-102 Stens Silver Streak 4" Segmented Blade.
Specs:
Bushing knockout for 7/8"
For hi-speed power saws
Segmented blade; type 7
Arbor Size: 5/8"
Cutting Condition: Wet/Dry
Cutting Width: 0.070"
Diameter: 4"
Segment Height: 10 mm
Weld Type: Sintered