They fit 0.25-in. OD tubing with 10-32 thread and come in both straight and elbow configurations. The elbow compression fittings, MCBL-14 (brass) and MCBL-14-303 (303 SS), are 59/ 64-in. (23.4-mm) long and have an installed height of only 21/32 in. (16.7 mm).