Double Plain Linear Bearing - Square Flanged - DFP08 1/2" End MountDouble Plain Linear Bearing with a 1 2" ID inside a square flanged housing. The ID has a precision running clearance of 0. 0005" per side. The self lubricating bearing liner is FrelonGOLD. The bearing enables linear or rotational movement. Precision ID running clearance (0. 0005" per side) Double sized with square flange end mount Closed Aluminum Housing with Anodized Aluminum Bearing Included Self lubricating bearing liner: FrelonGOLD is standard