Check the filter thread diameter printed on your lens barrel — it's typically marked with a ø symbol (e.g., ø52). Each of the 8 double-sided cylinders covers two size ranges, so you'll generally find a match within the 37–105mm span. Start with the side closest to your lens diameter and test the grip before applying torque.

Yes. The solid rubber material provides strong friction and grip, making it well-suited for loosening stuck or cross-threaded filter rings. Apply steady, even pressure rather than sudden force to avoid damaging the ring.

Each face features a concave (inward-curved) surface that keeps the rubber body away from the lens glass during use. This design generally prevents direct contact with the optical element, reducing the risk of scratches to coatings during filter ring removal.

This rubber lens spanner wrench works with any lens that uses a standard threaded filter ring, including lenses from Nikon, Canon, Sony, Fujifilm, Olympus, Pentax, and third-party brands like Sigma and Tamron. Compatibility is determined by filter thread diameter, not by camera mount type.

Yes. As long as the lens has a standard threaded filter ring within the 37–105mm range, this set is typically compatible with mirrorless lenses from Sony E-mount, Fujifilm X-mount, Micro Four Thirds, and other systems.

Yes. Each cylinder is 50mm (≈2") tall, which gives enough depth to engage the rear filter rings on mirror lenses and longer telephoto barrels that standard thin wrenches cannot reach. This is one of the key advantages of this camera lens repair tool kit over flat spanner alternatives.

The set includes 8 double-sided cylinders, each with a different diameter on each face, giving you 16 distinct working sizes ranging from 37mm (≈1.5") to 105mm (≈4.1"). The stepped-ladder design means each cylinder handles two adjacent size ranges.