Becoming master of multiple race car classes is finally reality without a single compromise. Different kinds of wheels are rapidly and securely interchangeable thanks to solid-metal Quick Release and low-latency Wireless Wheel connection. Precision machined full-metal Simucube Quick Release guarantees zero-backlash and rock-solid operation even under the extreme torques of direct drive wheelbase. Guided rail design ensures perfect lock-in every time, and spring preloaded pin mechanism will ensure non-degrading tight coupling over thousands of swap cycles. Just like the rest of Simucube. SQR has been built to be virtually immortal. The only practically wearing part, the spring-loaded pin mechanism, is made out of standard stock parts making it user-serviceable.