Pivot Lock Shoe, 1.25 x .530 Molded Plastic, Metal Spring

Pivot Lock Brake Shoe, 1.25 x .530 Molded Plastic, Metal Spring locking tabs
Used by many companies including Windsor on the Next Dimension Vinyl Double Hung Window

Lock Type: Sides, metal spring
Width: 1-1/4 inch
Height: 2 inch
Thickness: 17/32 inch ( about 1/2 inch )
Markings: Patent 4610108
Color: Gray or White

NOTE: Many of these look similar and some are interchangeable - See 62565