Pneumatic Connectors are available with either ferruless polytube fittings (3/8" tubing OD) or hose barb (3/8" tubing ID).  Ferrules fittings securely attach tubing without hose clamp - which is recommended for the hose barb type (hose clamp not included).  The 1/8" ID connectors are available with hose barb.

Part Number	Description
1/8" ID Pneumatic Contacts
610 131 106	Pneumatic Contact, Receiver, Hose Barb, for 1/8" ID [4 mm] Tubing
610 131 107	Pneumatic Contact (with valve), Hose Barb, for 1/8" ID [4 mm] Tubing
610 132 105	Pneumatic Contact, ITA, Hose Barb, for 1/8" ID [4 mm] Tubing
Modules for 1/8" ID Pneumatic Contacts
510 104 185	Pneumatic Module, Receiver, 10 Position (1/8" ID)
510 108 160	Pneumatic Module, ITA, 10 Position (1/8" ID)
3/8" ID Pneumatic Contacts
610 131 101	Pneumatic Contact, Receiver, Ferruless Fitting, for 3/8" OD, .250" ID [9.5 x 6 mm] Tubing
610 131 104	Pneumatic Contact, Receiver, Hose Barb, for 3/8" ID [9.5 mm] Tubing
610 132 101	Pneumatic Contact, ITA, Ferruless Fitting, for 3/8" OD, 1/4" ID [9.5 x 6 mm] Tubing
610 132 104	Pneumatic Contact, ITA, Hose Barb, for 3/8" ID [9.5 mm] Tubing
Modules for 3/8" ID Pneumatic Contacts
510 104 160	Pneumatic Module, Receiver, 5 Position (3/8" ID)
510 104 276	Vacuum-Pneumatic Module, Receiver, 1-2 Position
510 108 144	Pneumatic Module, ITA, 5 Position (3/8" ID)
510 108 264	Vacuum-Pneumatic Module, ITA, 1-2 Position
Pneumatic Contacts that fit Mini Coax and Mini Power Modules
610 131 108	Mini Pneumatic Contact, Receiver, Hose Barb for 0.125" [4.0mm] ID, Tubing Fits Mini Coaxial or Mini Power Modules
610 132 106	Mini Pneumatic Contact, ITA, Hose Barb for 0.125" [4.0mm] ID, Tubing Fits Mini Coaxial or Mini Power Modules