91603 Smart Poly® Basic Clock Wheel with Grommet 13"x19". Write-on/ wipe-off heavy duty washable all poly telling time charts, no lamination needed. Turn the wheel to tell and learn about time. 2 pieces, no assembly required. Use with dry erase or water based markers and washable crayons. Grommet hole for easy hanging. Use with pins, staples, etc. as an alternative to hang in the classroom. Glossy surface, .45mm.