LASCO 0-4055 Sterling Shower Stem Repair Kit, Use on Either Hot or Cold Stem. Sterling brand. For shower stem (valve). Repair/rebuild kit. Kit includes; (1) 1/4L flat washer, (1) bibb screw, (1) packing and (1) X-26NL seat. Use on either hot or cold stem. 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.