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Oetiker "stepless" clamps have some distinct advantages over screw-driven clamps. First, when clamped, they apply equal force all the way around the tubing which is not the case with other clamps on smaller tubing sizes. They are also a much lower profile which can be important in tight spaces or when the hose ends will be handled often. There is no sharp "tail" sticking out when clamped to tubes on the small side of the range. Lastly, they are cheaper than equivalent quality screw clamps.
Downsides? Oetiker clamps are crimped on so they do require a tool. Once they are crimped on, they will need to be pried or cut off and discarded. Oetikers also have a relatively small range of diameters they work with for a given size. That usually means you need an assortment to deal with any typical situation. Please refer to the table below for sizing information. These are sold individually but we do offer quantity discounts for 20 pieces or more.
| Max Diameter Inches | Max Diameter mm | Application | | 7/16" | 11.6mm | Bev Seal Ultra or EVA barrier over 3/16 or 1/4" barb (stretched) | 1/2"
| 13.3mm | 3/16" ID Bevlex (economy bev tubing) over 1/4" Hose Barbs | | 9/16" | 14.5mm | 1/4" or 5/16" ID Bevlex Tubing on 1/4" or 5/16" Hose Barbs | | 11/16" | 17mm | 1/4" or 5/16" ID Bevlex over 3/8" Hose Barbs | | 13/16" | 21mm | 1/2" ID Silicone Tubing over 1/2" or 5/8" Hose Barbs | | 1.1" | 25.6mm | 1/2" ID Silicone Tubing over Cam BigC, Cam BL, BLQD-Cplus, and BLQD-BL barbs (all are about 11/16" OD so they push the tubing larger) | | 1-1/8" | 28mm | 3/4" ID Silicone Tubing over 3/4 or 13/16" Barbs | | 1-1/4" | 31.6mm | 1" ID Silicone over 1" barb. |
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Good fit and price 
