Tillotson Carburetor Repair Kit RK-21HS for HS Series Stihl ModelsTillotson Carburetor Repair Kit RK 21HS for HS Series Stihl Models Made to OEM Specs to Provide a Direct Fitment & Easy Install! Manufactured with High Grade Materials by an Industry Leader Expedited International Shipping to the U. S. OEM Cross References: RK 21HS, RK 21HS TILLOTSON REPARATURSATZ Fits Models: Tillotson: HS 60D, HS 118B, HS 138B, HS 181C, HS 212B, HS 223A, HS 62B, HS 87A, HS 100A, HS 138A B, HS 181B, HS 189B, HS 212A B, HS 221A B, HS