LASCO 0-4051 Sterling Lavatory/Kitchen Faucet Stem Repair Kit for Hot and Cold Stems. Sterling brand. For lavatory or kitchen faucet. Repair/rebuild kit. Kit includes; (2) 00-bibb washers, (2) fiber washers, (2) o-rings and (2) bibb screws. Parts for both hot and cold sides (stems)! Larsen Supply a third generation family owned and operated company with over 80 years of experience has the largest retail plumbing line in the industry today with over 7000 packaged and 16,000 bulk SKU's. We pride ourselves on service, selection and support! All Lasco merchandise if warranted to be free of manufacturing defects. Please revert to retail place of purchase for resolution of any possible plumbing questions, warranty or defective part replacement.