STEELS is a playable word

steel Scrabble® Dictionary

verb
steeled, steeling, steels
to cover with steel (a tough iron alloy)
44 Playable Words can be made from "STEELS"
   2-Letter Words (4 found)
   3-Letter Words (12 found)
   4-Letter Words (18 found)
   5-Letter Words (7 found)
   6-Letter Words (3 found)