What is the quality and material of Kingston Brass' kitchen faucet?

Nearly all Kingston’s kitchen faucets are solid brass construction. The main faucet bodies, waterways and handles are all brass. Other materials in these faucets such as porcelain or ABS are accent materials on handles, side sprayers, and the like. For the remainder of our kitchen faucets, primary materials include zinc alloy, a highly resistant metal, and Engineering Grade ABS, a highly durable non-leaching plastic. Kingston also offers faucets with ABS waterways to suit certain specialized applications.

Please see the link below of our kitchen faucets:
https://www.kingstonbrass.com/cat/kitchen-faucets/