Plain Linear Bearing - Round Flanged SFPMR16 16mm ID Simplicity Linear Plain Bearing you can order the matching

you can order the matching 6mm wrench as part #6101227

Thin Wall Plain Linear Bearing with a precision 50mm ID (inner diameter)

This self-aligning

Open shell plain linear bearing with a JIS 50mm ID

and 1/4" length with a round flange

Plain Linear Bearing - Round Flanged SFPMR16 16mm ID Simplicity Linear Plain Bearing you can order the matchingRound flanged plain linear bearing with a 16mm ID, a precision round shaft running clearance, and a standard size aluminum housing featuring a self lubricating Simplicity FrelonGOLD liner bonded directly to the bore of the housing. Unlike recirculating ball bearings, the FrelonGOLD sliding surface has no rolling elements to jam, seize, or contaminate, making it well suited for harsh conditions involving extreme heat, dirt, vibration, shock, or