LIF-LOK® GATE—Size 1
To lock: close the gate; the built-in spring locks the gate against the hook tip.
To unlock: lift the gate upward on the hook shank and swing open.
PIN-LOK®—Sizes 2 through 4
To lock: close the gate; a stainless steel pin is carried in a horizontal bore and engages a milled slot in the hook shank.
To unlock: simply depress the stainless steel pin which causes the pin to disengage from the milled slot.
ROLLOX® GATE—Sizes 5 through 9
To lock: close the gate; a stainless steel pin is mounted in a horizontal bore which passes through the gate and engages a notch milled in the hook shank.
To unlock: move the lever downward a quarter-turn or until it stops, the gate can now swing open 160° (approx.).
TIP-LOK® GATE—Sizes 10 through 17
To lock: press the arm down until the lock trips; two arms of the gate now enclose the tip of the hook.
To unlock: manually depressing the locking trigger automatically raises the movable arm, allowing the gate to be rotated open.