Pin on LEGO!

LEGO Red Half Pin with Bar 2L (42456 / 61184)

Why have Technic pins been changed?

Lego® Technic 6628a Connector Pin with Friction and Ball (black)

Lego® Technic 6628a, 66906, 4184169, 6344752 pin with ball, black

You can also find this part in at least 29 other colours.

LEGO Dark Stone Gray Half Pin with Stud

LEGO MOC of the Week - Octagonal Staircase by AC Pin - BrickWarriors

Technic Connector Pins Set For Lego 62293, 42070 - Educational Building Blocks

NEW LEGO - Technic - Pins - Pin w/ Friction Ridges black x 50

LEGO PART 65249 Technic Axle Pin 3L without Friction Ridges and 2L Axle

Lego® Technic 61184 Connector Pin with Bar Extension (light bluish gray)

Lego® 61184, 42456, 4520320, 6347715 connector pin bar, light bluish gray