mp08Product Description. In keeping with the Gen 1 source material, MP-08 Grimlock is based upon the nostalgic tripod-stance concept of the tyrannosaurs; his robot mode offers a wider range ofMP08-30 Manual, Spring Return, Pull-to-Shift DESCRIPTION A 3-way, manual, pull-to-shift, spring-return, directional hydraulic cartridge valve. Series operation is prohibited due to