Graham-FieldPenrose Drainage Tubing- 3/4" Diameter, 18" Length, Pack of 25, Rubber Latex Surgical Tube- 3953.75

These work great. They have good strength and have been far more reliable than other brands. When you're dealing with drainage of bodily fluids those are both very important. You really don't want to deal with the mess if one of these tears or bursts, which is unfortunately the case with several brands I've used in the past. The GF brand have good wall thickness, stretch well, and almost never break under normal conditions.Do be aware though, these are real latex and will degrade over time or in unusually dry/hot conditions. So if you store them for extended periods between uses you should check each tube carefully for cracking.

Great