For Lowrance Anti-Theft Knob Lock Kit HDS (16), LCX -3A CHD Theft Deterent Lok
For Lowrance LCX -3A CHD. For Lowrance HDS (16). For All Lowrance Models. Type: Knob Lock. 1 Set of Knob Lock Kit. Tamper-Proof Security: Replaces factory knobs with specialty bolts (requires included drive bit).