2BK52-1" Sheave Pulley With OD: 4.95 Two Grooves 2BK52 1" for V-Belts size 5L, B, BX, 2BK521 (OD: 4.95" - ID : 1") Fixed Bore 1" 2BK521 2BK52-1" Sheave Pulley With OD: 4.95" Two Grooves Fixed Bore 1" inch 2BK52-1" Outside diameter: 4.95" inch Bore : 1" inch Belt section size: 5L - B - 5/8" Two Grooves One pulley Hex set screws keyway: 3/16" × 3/32 " Pulley Size: 2BK52 Outside Diameter (O.D.): 4.95" Pitch Diameter For 4L/A Belts (P.D.): 4.20" Pitch Diameter For 5L/B Belts (P.D.): 4.60" Pulley Type: 2 Bore Size: 1" inch Key-Way Size: 3/16" X 3/32" Dimension (F): 1-3/4" Dimension (L): 1-15/32" Dimension (P): 15/32" Dimension (C): 3/4" Weight: 4.5 LBS