Will this work on my floating or fixed-mount calipers?

Yes. The design adapts to both caliper styles. Test-fit on your specific caliper before your first use to confirm proper seating and pressure distribution.

Do I need to bleed brakes after using this tool?

Not necessarily. As long as you don't open any brake lines or fittings during pad replacement, you can skip a full bleed. If fluid seeps or lines are disturbed, bleed according to your vehicle's service manual.

What if the piston won't compress all the way?

Seized or sticking pistons need brake fluid softening first—soak the caliper with fresh fluid for 15–20 minutes. If the piston still won't move, the caliper likely needs rebuild or replacement. This tool applies pressure; it doesn't fix hydraulic problems.