Uniweld’s VHE Elbows & VH Heating Tips are designed to tackle any situation by giving the operator different elbow lengths and heat outputs to choose from. Connecting to the UM12-1 mixer, the operator can mix and match different lengths of stainless steel elbows ( 10, 16, 28, and 36″) with different heating tips (100,000 to 1,000,000 BTUs).