4 Belt Pulley 4.45" OD X PICK BORE CAST IRON Single Groove "A" 4L Pulley AK46 4.5" 4 V Belt Pulley 1 Inch Bore Cpt Ak46 Cast Iron V Belt Spoke Pulley Sheave With Key Way - Buy Cast... Cast iron material,statically balanced and rust spraying,Standard keyseats and Finished bore, Classical V-belt sheave fits widely available, classical profile V-belts suitable for use in many existing drive designs Inner diameter:1 inch, Bore type:Fixed Bore 1 in Fixed Bore 1 Groove V-Belt Pulley 4.45 in OD Standard V-belt Pulley: Use to Aor 3L or 4L V-Belts The DH racing parts Shrouduses great electric cooling fan (s) and is a very good value. Fits Chevy C/K Series C10,C20,K10,K20 Pickup 1967-1972 . Fits Chevy C/K Truck C10,C20,Suburban 1968- 1972 . Mounting Hardware Is Not Included For Mounting The Shroud To The Radiator Or The Fans To The Shroud