Duckhead Kit with Round Hole Adapter.
Adapter Hole Measures Approx. 1-1/16"  Across Center.
 
Kit Fits:
All Tool: All models
Coats Models : APX90,  RC 1, RC 5, RC 10, RC 15, RC 20, 9010, 9024e and Early 5060
Corghi: All models
Giuliano: ALL Models ( The Head Shaft Must Be Rotated 180 Degrees)
Hofmann : All models EXCEPT 1550 ,1620, and 1625
Hunter: TCX SERIES
Sice Models: M39, S40, S41, S42, S43, S45, S408MAXI, S435, S436, S436TOP
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REPLACES:
ALL TOOL #  G3008403 , G2008401
COATS # 83008403 , 82008402
CORGHI # 450310 , 250309
GIULIANO # 3008403
HOFMANN # 2200981 , 8314813
HUNTER # RP11-8314813
SICE # 8314813 , 2200981