Clamps for pneumatic hose and tubing are available in zinc-plated and stainless steel. They do not damage hose/tubing materials and come in sizes as small as 0.98 in. closed diameter. Clamps speed installation, resist tampering, and offer low profile posture. Constant seal holds against pressure, vacuum, vibration, and temperature fluctuations. Oetiker Inc., (989) 635-3621,