Product Description LASCO Plumbing Specialties 32-1901 is a 3/4-Inch by Close Type 304 Stainless Steel Pipe Nipple. Pipe nipple. Type 304 stainless steel. Lead free approved product in all states. Used in water, gas and pressure systems. 3/4-Inch by close. From the Manufacturer LASCO Plumbing Specialties 32-1901 is a 3/4-Inch by Close Type 304 Stainless Steel Pipe Nipple. Pipe nipple. Type 304 stainless steel. Lead free approved product in all states. Used in water, gas and pressure systems. 3/4-Inch by close.