Adds an adjustable stop to any 15 Series 80/20 brake kit ready bearing. Secures gliding profiles into semi-permanent positions. Secure lockdown capability for safety. Made out of die-cast zinc with a gloss finish. The “L” handle linear bearing brake kit adds an adjustable stop to any brake-ready bearing by securing it into a semi-permanent position. It also adds a grip to aid with adjustments and provides secure lockdown capability for safety.