PRO-Fit Quick Connect Support Kit 1/4" - 5/8". 4 disconnect clips allow for easy removal of the PRO-Fit Quick Connect fittings from 1/4", 3/8", 1/2" & 5/8" line sets or pipe. Durable, light weight plastic construction. Correct errors by quickly & easily releasing pipe from a PRO-Fit Quick Connect Fitting. Easy to use in tight spaces. Also includes plastic depth gauge for marking line sets or pipe to insure proper seating inside the PRO-FIT Quick Connect Fitting for leak free installation.