The FFB.4A.675.CTCC13 is a Shell Style/Model Ffa- Straight plug, cable collet. Keying - Hermaphroditic keying ("half moon" insert), plug has male pin 1 Specifications . Housing Material C: Brass (chrome plated) shell and collet nut, nickel plated brass latch sleeve and mid pieces. Cable Fixing C62: 5.1 - 6 mm (0.2 - 0.24")