The ALL-NEW Stealth Seamer 90° Manual is the ideal solution for consistently creating high-quality perpendicular seams such as mitered aprons, butt-joints, and compound corners—without the hassle of straps or bar-clamps. It is the only 90° seamer that can also be inverted for inside corners. The product’s proprietary non-marking cups feature our FTS™ (Flexible Triple Seal) technology that locks-in vacuum and provides optimum hold—even on textured and leathered materials. Smooth-turning knurled rollers pull pieces together for expert alignment, and fine-tune levelers help dial-in the perfect angle for precise seams. An integrated counter-pressure leveler helps overcome the lower out-swing of vertical pieces. Easy to read indicators allow monitoring vacuum pressure at a glance, and cups can be re-pumped without loss of remaining pressure, unlike screw-knob or flip-lever suction cups. Sold individually; not recommended for porous material or heavy waterfall pieces (see 90° Auto for these applications).