Your life is about to change forever. Beyond the imagination of every day makers, there lies the improved hose clamp. The hose clamp is much more impactful than it sounds. It is a masterpiece of true wonder and genius. The epitome of 3d printing has been attained as now anyone can print for themselves a hose clamp with easily releasable grips. 

Professional engineers will bow before the great attainment of skill that I used in the transcendent design parading known as Sketchup Free version to add to what already was greatness.

I've printed this in PLA and PETG

Also, it's recommended to use the XY Size Compensation to tighten/loosen the grip that it has to your liking. I recommend .1 mm for starters.

Scale to whatever hose you like. Pictured here is a 5/8" OD hose (½ " irrigation vinyl tubing) and that is 150% scaled up (so you'd probably want something like 175% if you wanted to do this for a ½" garden hose.

Out of the overwhelming kindness of my own heart. I have decided this model should be under a free license. I consider it the crowning glory of all of my achievements. I can now die (probably not anytime soon) knowing that I've fulfilled my purpose in life.