Insert Bowl No. 1 is used to handle different size of tubulars ranging from 11.3/4'' to 13.3/8''. Insert Bowl provides a better slip back-up which is made for running heavier tubular strings without string failure due to bottlenecking. 

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Insert Bowl No.1 can be used in following master bushings:-

1. Master Bushing 37½” which is for National/Oilwell/EMSCO/Drillmec etc, Rotary Table,  

2. Master Bushing 27½” which is for NOV/Wirth/Oilwell/Drillmec etc Rotary Table,

3. Master Bushing 20½ which is for NOV/Wirth/Drillmec/Oilwell etc. Rotary Table.

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Spectrum Drilling Tools make Insert Bowl No.1 is equivalent to NOV make insert Bowl No. 1, and can be used in Varco MSS Master Bushing, Varco MSPC Master Bushing, Varco MPCH Master Bushing or any other API Standard Master Bushing.

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We can make customised Insert Bowl too send us your inquiry.