Invacare Matrx PB Deep Back Replacement Covers

Overall I would rate these an 8 out of 10. Pros: 1. Wheels still lock with a low or flat tire. 2. 1 handle easy push/pull action locks/unlocks both wheels. 3. Wheels can be removed while locks are active. 4. No lock handles in the way of you pushing. (I've jabbed my thumbs on tradition locks when pushing up hill) 5. Easy installation. Cons: 1. Plastic case that houses the 3 cable ends broke after 4 months. (I self repaired and reinforced this part) 2. Wheels still have a little forward/backward play due to ock location and spoke flex. 3. Fatigues spokes over time causing them to break at the lock ring point. (Experienced this after 2 years of use, 9 broken spokes so far) 4. Expensive in my opinion Final: Even with the issues I've experienced these are still far better than traditional locks. Be sure to use some sort of thread locker like loctite when installing the tiny screws in the lock ring, otherwise they will loosen and fall out over time.