This 2 pack of  Black Tom Plumbing Specialties 21-171 Multi Brand Faucet Repair Kit K-48 is a high-quality product from Best Plumbing Specialties. This kit includes everything needed for repairing a variety of faucet brands, making it a versatile and convenient solution for businesses and industrial facilities. With reliable components and easy instructions, this kit ensures that faucets are repaired quickly and efficiently, saving time and resources. Works on American Standard R4151 & R4155, Schaible R4150 & 1699 thru 2699, Sears 2122 & 2124 & 2132, H.J. Hodes K.C.MC.