Double Linear Bearing - Square Flanged DFP12 3/4" End MountExtended Plain Linear Bearing with a 3 4" ID in a square flanged aluminum housing (end mount). The ID has a precision running clearance and features a unique self lubricating FrelonGold lining for maintenance free linear, rotational or oscillating motion in harsh conditions like extreme heat, dirt, and vibration. Extended Size Housing With Bearing Included Inch Series Diameters Square Flanged End Mount Closed Shell Precision ID running clearance (0.