The pivot lock shoe is used in tilt window applications and sits in the jamb channel and has a cam which will lock the shoe in the channel when the sash is tilted inwards. Pivot lock shoes work in tandem with window pivot bars to allow windows to tilt. This shoe has a clip attachment that acts as a direct tie-in for Tilt Block & Tackle Balances. Compatible with our 350 or 450 Series Tilt Block & Tackle Balances.