1 in Fixed Bore 1 Groove Standard V-Belt Pulley 6 in OD · Free shipping · Free 30-day returns Single Groove V-belt Pulley AK27, 1 Groove, V-Belt Pulley - 145R40|AK27X1 1/4 Fixed Bore 1 Groove O-ring Pulley 0.88 In Od 8 1/4 in. Bore Type: Finished. Includes: Set Screw. Material: Cast Iron. Material Fabrication: Cast. Number of Set Screws: 1. Outside Diameter: 0.88 in. Pulley... Dayton O-Ring Pulley include characteristics like: Number Of Grooves: 1, Construction: Solid, Pulley Material: Cast Iron. Belt, Sheaves & Pulleys|Sheaves & Pulleys Pulley Material: Cast Iron, Pulley Type: O-Ring Pulley, Pulley Bore Dia., : 1/4 in