Ventilschlösser 3/8in. 2 & 4 Rillen, 10°, Satz für 16 Ventile Valve Locks 3/8in. 2 & 4 groove 10° Valve locks for all of your rebuild needs. Competition Cams Super valve locks are wider-angled 10 degree locks. They distribute the ever-increasing valve spring loads over the retainer better than typical 7 degree locks by reducing the chance of in.pull-throughin. failure. These valve locks are precision-machined for accuracy and are available for many popular valve sizes with or without a lash cap recess. The Super valve locks will fit any Comp Cams 10 degree retainer and are recommended for all race applications due to their superior strength.