OptiTorque TorqueMaster Series Cylinder Head Stud Kit - 12 Point Nuts - Chromoly - GM LS-Series 10575 15857D Oil change: according to manufacturers

Oil change: according to manufacturers recommendations and to be adapted according to your own use

These are sold as a set of two stainless steel T-clamps

Fully potted housing to stand up to demanding race conditions

2 in Square Tubes

and has a 1/8" NPT male fitting

OptiTorque TorqueMaster Series Cylinder Head Stud Kit - 12 Point Nuts - Chromoly - GM LS-Series 10575 15857D Oil change: according to manufacturersProduct Description: Cylinder Head Stud Kit TorqueMaster Series 12 Point Nuts Chromoly Black Oxide GM LS Series OptiTorque produces premium quality fasteners for a wide range of automotive applications. From stock rebuilds to hard core racing builds, OptiTorque fasteners are USA made and designed, featuring premium materials and designed to meet or exceed OEM specs.