Master bushing is casted with high-quality alloy steel as per API 7K Spec. Two kinds of master bushing are available: pin drive and square drive. The size range of master bushing is from171/2 to 371/2 inch.
More information, pls download the technical PDF file above or send email to us.
Edit by Mr. Will Fan of KRM/BSW
Contact us directly by:
Tel / Whatsapp: 0086-18511695725