MECHANICAL-SINGLE-LINE-CLAMSHELLS, DUAL-SCOOP-BULK-GRABS, MECHANICAL-TWO-ROP- CLAMSHELLS, FOUR-ROPE-MECHANICAL-CLAMSHELLS, HYDRAULIC-CLAMSHELLS, ELECTRO-HYDRAULIC-CLAMSHELLS, DIGGING/ DREDGING-CLAMSHELLS, MECHANICAL-ROUNDNOSE-GRAB, MECHANICAL-LEVEL-CUT-CLAMSHELLS, HYDRAULIC-LEVEL-CUT-CLAMSHELLS, MECHANICAL-ORANGE-PEEL-GRABS, HYDRAULIC-ORANGE PEEL-GRABS, ELECTRO-HYDRAULIC-ORANGE-PEEL-GRABS, MECHANICAL-ROCK-HANDLING-GRABS, HYDRAULIC-ROCK-HANDLING-GRABS.