Supply Of Single Sleeve Pully Block 3 1/2 X 1/2Single Sleeve Pully Block 3 1/2 X 1/2,Single Sleeve Pully Block 3 1/2 X 1/2 Fiber Groove Fiber With Forged Swivel Hook For Drawal Of Contact/Catenary Wire. Make: Sste, Maxban, Iep, Venus. [ Warranty Period: 30 Months After The Date Of Delivery ]