This Motta tamper is made of quality materials Flat Base is made from 18/10 AISI 304 stainless steel with non stick coating, Base measures 58 mm. Ergonomic handle made of solid beech wood. To find proper tamper size for your porta filter, measure the inner basket diameter, then subtract 1 mm Made in Italy This Motta coffee tamper measures 58 mm with teflon coated stainless steel base with natural wood handle.