T-Handle Latch - Chrome Plated Zamac/Black Nylon - Locking - Freshwater Only. Features:. Nylon Body and CP Zamac handle Locking T-Handle latch. Short Offset Cam Bar. Nylon body is Black. Neoprene O-ring & Key fastener included. Surface Depth - 1/8"-3/4". Diameter - 3". Cut-Out - 2-1/2". Chrome Plated Zamac parts should be installed on fresh water boats only