4B50SD 4 Groove Cast Iron Sheave for "4L" or "A" Belts and "5L" or "B" Belts Bushed Outside Diameter 5.35" QD Bushing Sold Separately .Statically Balanced & Powder Coated.**Picture is...4B50SD 4 Groove Cast Iron Sheave for "4L" or "A" Belts and "5L" or "B" Belts Bushed Outside Diameter 5.35" QD Bushing Sold Separately .Statically Balanced & Powder Coated.**Picture is...