Plain Linear Bearing - Square Flanged SFPM12C 12mm Compensated ID Simplicity Linear Plain Bearing but the TWN blocks are

but the TWN blocks are larger

10mm compensated ID that provides a 0

Matches Hevi-Rail Linear Rail HVR-0 U-Type

with a 4 inch precision ID (inner diameter) that provides a 0

Self-lubricating FrelonGOLD® liner supports maintenance-free operation

Plain Linear Bearing - Square Flanged SFPM12C 12mm Compensated ID Simplicity Linear Plain Bearing but the TWN blocks areSquare flanged plain linear bearing with a 12mm ID, a compensated running clearance, and a standard size aluminum housing featuring a self lubricating Simplicity FrelonGOLD liner bonded directly to the bore of the housing. The square flange allows secure mounting to a machine frame or plate, while the bore lining supports maintenance free linear, rotational, and oscillating motion along a round shaft. Unlike recirculating ball bearings, the FrelonGOLD