PBC Linear TWN 08 OPN S Twin Roller Pillow Block with Scrapers, For 1 2 in Round Shaft, 800 lbf Dynamic Load Rating 68514437242 For Use on Surface Types For Use on Surface Types Ice Suggested Environment Outdoor SAE AS4984A For Use With Proto Ratchet Sockets Features Heat Treated Output Drive Type Male Square Locking No Drive Type Female Square SAE or Metric SAE Number of Points 4 Input Drive Shape Square Socket Extension Type Wobble Insulated No Output Drive Shape Square Output Drive Gender Male Input Drive Gender Female Non Sparking No Mounting Hole Diameter 0 System of Measurement Inch Housing Material Aluminum Alloy Bearing Material Aluminum Alloy Dynamic Load Rating 800 lbf Carriage Type Twin For Shaft Type Round Resistance Properties Corrosion Resistance Includes Scrapers Scrapers Included Weight 0