Option - B9A Six Wheel Safe-Lock For Larger Ladders, 9-16 Step $125.00 SKU: Option B9A Back $125.00 Quantity -+ Add to Cart Details Option B9A Six Wheel Safe-Lock For Larger Ladders, 9-16 Step This safelock system adds another pair of swivel casters to allow easy movement aro...DetailsBackOption B9A Six Wheel Safe-Lock For Larger Ladders, 9-16 Step This safelock system adds another pair of swivel casters to allow easy movement around corners. Available on 9 to 16 step models, Product Code: Option B9ASee MoreSee Less