W Series (Aluminum)

Outside Diameter: 15 mm
Length: 20 mm
Major Bore: 4 mm
Minor Bore: 4 mm

Outside Diameter: 15 mm
Length: 20 mm
Major Bore: 3/16 in
Minor Bore: 3/16 in

Outside Diameter: 15 mm
Length: 20 mm
Major Bore: 1/4 in
Minor Bore: 1/4 in

Outside Diameter: 20 mm
Length: 20 mm
Major Bore: 3/8 in
Minor Bore: 3/8 in