Help ID these rings

[elwarpo]

Found these in a box in the gun room and do not remember where I got them. Seem well made. 30mm, about 1.25" high. Looking to mount a scope and are they worth using? (2.5-10 power high end scope, not for precision shooting)

 

[diverdon]

Vertical split rings cause scope malfunctions. Toss um.

 

[Arc Light]

Look like Warne HD rings.

 

[338dude]

Found these in a box in the gun room and do not remember where I got them. Seem well made. 30mm, about 1.25" high. Looking to mount a scope and are they worth using? (2.5-10 power high end scope, not for precision shooting)

They look like a brand called DuraSite I tried once and had nothing but problems, I will never use a vertically split set of rings again