Technic Axle Connector 2 x 3 Quadruple

Technic Pin Connector Hub with 2 Perpendicular Axles

Technic Axle and Pin Connector Triple [120° Offset]

Technic Pin Connector Perpendicular 2 x 4 Bent - Beam with 90 Hole Ø 4.8

Technic Pin Connector Hub with 1 Pin with Friction Ridges Lengthwise

Technic Pin Connector 3L with 2 Pins and Center Hole

Technic Pin Connector Round 1L [Beam]