LEGO® Dark bluish gray Pneumatic Hose Connector with Axle Connector 99021 LEGO Element ID: 6020189, 6265669

LEGO® Technic Brick Modified 2 x 2 with Pin Holes and Rotation Joint Ball Half (Vertical Side) 48171 LEGO Element ID:6187578, 6302828

LEGO® Technic black axle connector Double - Flexible Rubber 45590 LEGO Element ID:4198367

LEGO® Technic axle connector 98585 Block Round with 2 Pin Holes and 3 Axle Holes (Hero Factory Weapon Barrel) LEGO Element ID: 6156897, 6186133

LEGO® Technic Black axle & pin connector Hub with 2 Perpendicular Axles 10197 LEGO Element ID: 6099801

LEGO® Technic Black axle & pin connector Angled #4 - 135 degrees 32192 LEGO Element ID: 3219226, 4121610, 6262897

LEGO® Technic Black Axle 2 with Reverser Handle Axle Connector 6553 LEGO Element ID: 4107765, 655326

LEGO® TechnicRotation Joint Ball Loop with Two Perpendicular Pins with Friction 47455 LEGO Element ID: 4213374

LEGO® Black Pneumatic T Piece 4697b LEGO Element ID: 6104209

LEGO® Technic Liftarm 1 x 15 thick dark bluish gray 32278 LEGO Element ID: 32278199, 4210687

LEGO® Technic Liftarm 1 x 15 thick black 32278 LEGO Element ID: 4128603, 4542573

LEGO® Technic Brick 1 x 16 with Holes black 3703 LEGO Element ID: 370326