Beswick fittings are noted for their miniature size, adjustable position tee fitting, 10-32 external thread to barbs and built-in reducing barbs. Also integrated with a couple of tubes and hoses with different inside diameters. Once used with exact polyurethane tubing, the maximum pressure rating is 100 psig. A clamp is installed which contributes to the burst pressure of the tubing. The fittings are integrated with Beswick's trademark O-ring seal design to deliver leak-proof performance. The single edged "line contact" barb allows for easy installation and exceptional holding power. This also leads to leak-proof connection at tubing interface. In general cases, polyurethane or vinyl tubing can be used