Image Item No. Description  3997c01 (Inv)  Hook Fabuland Tow (3997 / fabhook) Catalog: Parts: Hook  3997  Hook Fabuland Tow - Arm, 2 x 4 Base Catalog: Parts: Hook  fabhook  Hook Fabuland Tow - Hook Only Catalog: Parts: Hook  3135  Hook Slope 45 2 x 3 x 1 1/3 Double with Arm Catalog: Parts: Hook  3135c01 (Inv)  Hook Slope 45 2 x 3 x 1 1/3 Double with Arm and Black Tow Hook Catalog: Parts: Hook  3998  Hook Wide Catalog: Parts: Hook