Dryer Maintenance Kit used on 27 in. gas and electric Whirlpool/Kenmore brands clothes dryers and thin twins. Kit includes (1) No. 661570 multi-rib belt (4) No. 3396802 drum support rollers (1) No. 3388672 Idler assembly (9) No. 690997 tri rings (1) No. 233520 washer and (1) No. 279909 instruction sheet. More Information