Hardened Crown Roller Rail Overall Length 12 in Overall Width 1.655 in Overall Height 0.875 in Rail Material Steel Agency Compliance - Dimension B1 - Dimension F1 - Dimension F2 - Dimension G1 - Dimension G2 - Dimension J1 - Dimension S3 - Dimension X - Dimension Y1/Y2 - For Use With Hardened Crown Roller Bearing Includes - Maximum Operating Temperature 248 Degrees F Minimum Operating Temperature 0 Degrees F Mounting Hole Center to Center - Mounting Hole from Shaft End -