Piutouyar 12Pcs Suction Cup with Ring 1.6"/40mm Clear Key Ring Suction Cups Sucker for Window Kitchen Wall Hook Hanger

The Piutouyar 12Pcs Suction Cups with Ring have received a mixed reception from customers, with varying experiences reported based on the surfaces to which the cups are applied. Many users appreciate the suction cups' effectiveness when adhered to smooth, flat glass surfaces, making them a popular choice for purposes such as car window shades or terrarium doors. Customers have noted that the suction cups allow them to prolong the life of older window shades and efficiently support terrarium doors, often stating they hold firm and do not easily detach when used appropriately. However, the product's performance diminishes on non-glass surfaces, with several users reporting difficulties when trying to use them on textured, powder-coated, or wooden surfaces. Comments highlight that the design is somewhat under-engineered, as the rigid plastic composition and shallow cavity lead to poor suction on surfaces that require a more adaptable fit. Some customers have expressed disappointment when the cups failed to stick as intended, especially on various metal finishes or uneven surfaces. In summary, while the Piutouyar suction cups perform well under specific conditions (like glass), they may not meet the expectations of those looking for versatility across different surfaces. Prospective buyers should be aware of these limitations before making a purchase. **