the spide insert is for CANVINS tubing spider TYPE C,CHD,E,G. We made those inserts for CANVINS tubing spider or air slips ... and well servicing operation, Full Circle Slip Inserts are available for Cavins “Advance” Spiders, Models“B”, “C”, “C-HD”, “E”, and ... joints, before torque application. (Rollers or chain are also used for gripping of tubular while using pipe spinners)SHINEQUIP manufactures tong ...