GT16612 GT16C-/0.7-1.5PC GT16C-/0.7-1.5SC GT16C-/1.1-2.2SC GT16C-/1.6-2.9PC GT16C-/1.6-2.9SC GT16C-1P/S-R GT16C-1P/S-R(23) GT16C-1P-DS GT16C-1P-DS(01)