Does the Marble Arms dovetail blank slide in from right to left, or left

Does the Marble Arms dovetail blank slide in from right to left, or left dovetail slot blank Fill a barrel dovetail when there is no sight installed Easy installation with one locking screw Aluminum, black anodized finish Fits 38” dovetails dovetail slot blank JG Airguns WIL1951 38 Dovetail Slot Blank, Williams

dovetail slot blank This 38 inch slot blank fills the dovetail when sight is removed; His sight slot blank is perfect for filling a dovetail after a sight has been moved; Can be

main slot pragmatic Sight blank filler for a 38 dovetail  Marlin 1895CB Rifle Parts · Cowboy Killer 45-70 GOVT Slap Stickers · Dovetail Slot Blank Dovetail Filler Marlin Dovetail filler · Marlin lever