1. Main Technical Parameters: (1). Model: WT 4 1/2-6. Drill Collar O.D. (in): 4 1/2-6. Drill Collar O.D. (mm): 114.3-152.4. Weight (kg): 49. Weight (lb): 108. Use in Insert Bowl No.: API or No. 3. Max Load: 40 short tons. (2). Model: WT 5 1/2-7. Drill Collar O.D. (in): 5 1/2-7. Drill Collar O.D. (mm): 139.7-177.8. Weight (kg): 46. Weight (lb): 101. Use in Insert Bowl No.: API or No. 3. Max Load: 40 short tons. (3). Model: WT 6 3/4-8 1/4. Drill Collar O.D. (in): 6 3/4-8 1/4. Drill Collar O.D. (mm): 171.4-209.6. Weight (kg): 42. Weight (lb): 92. Use in Insert Bowl No.: API or No. 3. Max Load: 40 short tons. (4). Model: WT 8-9 1/2. Drill Collar O.D. (in): 8-9 1/2. Drill Collar O.D. (mm): 203.2-241.3. Weight (kg): 39. Weight (lb): 86. Use in Insert Bowl No.: API or No. 3. Max Load: 40 short tons. 2. Product Description: Drill Collar Slips are specially developed to handle drill collars during well drilling. Drill Collar Slips Type WT can accommodate drill collars from 4 1/2 in (114.3 mm) to 9 1/2 in (241.3 mm) O.D.. They are designed and manufactured according to API Spec 7K Specification for drilling and well servicing equipment. 3. Features: (1). Multi-segments design make it possible to handle different size drill collars by adjusting the quantity of inserts or slip body. (2). 100% customer satisfaction for quality and reliability. (3). After machining all slips undergo 100% inspection. (4). Different types for clients choice for different depth well and different size drill pipe. 4. Material: Carbon Steel. 5. Processing Type: Forging. 6. Machine Type: Drilling Equipment. 7. Use: Well Drilling. 8. FAQ: Why you need to choose Lake Petro? As a professional oil and gas service company, Lake Petro has many good experience in selling and serves for the oilfield industries for years. Quality is the culture of the company, we provide API and BV certified products for customer.   Can you make us the best quality products as well as a good price? Yes, we can give you really high quality products with competitive price. We have a better understanding in Chinese market, with us your money will be safe.   What is special compare with other companies? First, we provide the quality products, with BV and API certified; At the same time, we provide our customer with the best service after sale, any time any where.