Click to expand Tap to zoom Whelen 600 to 64 Series Mounting Adapters by Whelen Engineering $5.85 | / SKU 64FKIT 1 2 3 4 5 6 7 8 9 10+ Quantity Quantity Add to cart Description Description Whelen adapter allows you to mount your 600 series lights in holes for Whelens older 64 series.