Image Item No. Description  30624  Hinge 1 x 4 Triangle with Two Pins, Locking 1 Finger Catalog: Parts: Hinge  30540  Hinge Brick 1 x 2 Locking with 2 Fingers Horizontal End Catalog: Parts: Hinge  30389  Hinge Brick 2 x 2 Locking with 1 Finger Vertical (Undetermined Type) Catalog: Parts: Hinge  30552  Hinge Cylinder 1 x 2 Locking with 1 Finger and Axle Hole on Ends with Slots Catalog: Parts: Hinge