The Sur-Lock Liner Retention System was designed to drastically reduce the amount of time it takes to change a liner. Additionally, we have created a unique low-torque mechanical design that allows the liner retainer to be fully tightened without hydraulics, and without the need for dangerous sledgehammers and cheater bars. There is also no heavy nut to remove; simply pull out the old liner, swap the light weight adapter to the new liner, then insert and lock

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