Stainless Steel Sliding Barn Door Hardware Kit, Black, (Whole Set Includes 1x Adjustable Floor Guide) 13FT and the rotation axis below

and the rotation axis below is also 18mm/(45/64")

4ft single kit fits door panel width: 24" or less than 24"

(According to your rail holes

11ft double kit fits door panel width: 33" or less than 33"

is made from robust materials like stainless steel and iron

Stainless Steel Sliding Barn Door Hardware Kit, Black, (Whole Set Includes 1x Adjustable Floor Guide) 13FT and the rotation axis belowProduct Advantage: Roller: High quality stainless steel (Gcr15 roller wheel bearing). Track: Aeronautical grade aluminum, Rigid plate structure, Chrome plating silver surface, Anti corrosion and lighter, Loading capacity becomes more powerful. Easy to Install: Adjustable wall fixed position, you can move the wall hangers wherever you want. The CCJH track is never derailed, anti jump disk is designed on roller, make track in solid and safe status, and