1. The total length of the cylinder is shortened by 7mm (for CKP1□40) 2. Due to the use of screw adjustment structure, speed adjustment is easier 3. The speed control valve will not protrude to the cylinder surface 4. The strong magnetic field resistant magnetic switch can be installed from 3 directions. Compatible with D-P3DW type, D-P4DW type (CKG1) Compatible with D-P79WSE type, D-P74L/Z type 5. Compatible with arc welding clamping cylinder (-XC88/-XC89/-XC91) (CKG1 only)