Description of π Enhanced Precision with General Tools 290ST 2Piece Centering
Create perfect pilot holes - two heavy-duty bits create pilot holes in cabinet and door hinges. Self-centering design - spring loaded, outer guide keeps the high speed drill centered. Adjustable and durable - adjustable drill depth and high speed steel construction. Features 7/64 in. And 9/64 in. Self-centering drill bits - 7/64 in. Bit is compatible with screw sizes no. 5 and no. 6; 9/64 in. Bit is compatible with screw sizes no. 8 and no. 10.
They work as intended and allow drilling precisely centered holes in hinges and similar brackets. They're not as smooth in diving as the more expensive versions I have at work, but they work really well considering they're a fraction of the price.
Media could not be loaded. The shank is not centered so it wobbles like crazy, there's no way to cut the right size hole you wanted to cut and mess up the materials because the whole thing will dance like crazy.
I don't know what warmth and transparency have to do with these drill bits. Revain has some very weird "feature" categories that don't make any sense. Anyway, I bought this set on the recommendation of some furniture builders I've followed on YT. I'm glad I have them, they work well and do the job they are meant to do. A very smart design that just helps it work better by being more accurate.