Keller Sash Clips. Handed Left and Right.
Used on their single hung non-tilt windows.
Attached to bottom of sash.
Price in pairs, Sold in pairs.

Used Primarily with 72 Series Keller Windows

Related Keller Window Parts:
72109 - 3/8 inch Rivet
72110 - Plastic Carrier Shoe - Black
72111 - Top Sash Guide, Non Handed
72112 - Bottom Sash Guide - Handed left and Right
72113 - Balance Dust Cap
72114 - Metal Retainer - Discontinued Item
53200 - Balance tool, Adjusting Tension


Resources:
Guide: HOW TO ADJUST A SPIRAL BALANCE ROD
Video: HOW TO REPLACE A SPIRAL BALANCE