THOMPSON TWN-4 S.P.B Pillow BLOCK Thompson Ind. Linear Motion 6.35 mm (0.250 in)
https://www.thomsonlinear.com/en/product/SPB4 $101.67 each RETAIL GOOD NO DAMAGE SEALS INTACT ZERO RUST ALL BALLS THERE AND ROLLS FREELY ALL BALL CAGES INTACT I WILL NOT SELL A DAMAGED ITEM. AUCTION IS FOR 1 Pair ( 2x pillow blocks)