*Wingstay 29 is the choice in black compounds. In colored compounds, Mark 308/1.00 Irganox 1076 is the better choice. Plasthall 550 or 670/75.00 PVC (K=70)/95.50 Mark 974-A/2.00 Stearic Acid/0.50 Paraplex G-62/5.00 Chemigum P83/54.50 Wingstay 29*/1.00