Installation Instructions
Which yellow Knob is in your vehicle?
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Yellow Roll Pin Knob
Roll Pin Installation InstructionsIs this the knob installed in your vehicle? This knob is usually factory installed in Class A Motorhomes with Air Brakes. This knob is most commonly used. Use STOP KNOB Model: SNAR1
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Yellow Spring Button Knob
Spring Button Installation InstructionsIs this the knob installed in your vehicle? This knob is also factory installed in Class A Motorhomes with Air Brakes. Use STOP KNOB Model: SNAR1
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Yellow Commercial Knob
Commercial Installation InstructionsIs this the Knob installed in your Super C Motorhome, Commercial Truck, Heavy Equipment, or Bus with Air Brakes? Use STOP KNOB Model: SNCB1
Instructions for Roll Pin Removal Tool

Roll Pin Removal Tool
Our custom removal tool easily
removes the Roll Pin on factory air brake knobs. Click for full instructions on this tool.