Supco capillary tubing .052 id x 12 ft fits any domestic and commercial refrigerator or room air conditioner from 1/8 h.p. To 5 h.p. precision bore, plus or minus .001 the bullet restricto cap is consolidated into a five-pak replacement kit. It’s guaranteed to provide you with uniformity on all applications the five inrestricto capin sizes cover hundreds of applications specification: astmb360