Drill Collar & Tool Joint Compound Jet-Lube Z-50 35 LB. PAIL contains prime grade zinc and formulated with 50% metallic zinc, meeting the metallic zinc requirements described in API Bulletin 5A2. Z-50 contains special additives to reduce the plating and buildup of metallic zinc encountered with other zinc compounds. Benefits of using Z-50™ Non-plating Low sulfur content Non-reactive Brushable over a wide temperature range Consistent rig floor makeup Resistant to further downhole makeup Sticks to wet joints Non-reactive Specifications: Base Materials: Aluminum Complex / Petroleum Friction / K-Factor: 1 Service Rating: 0°F to 300°F, -18°C to 150°C TDS SDS