MAX-LOC Strain Relief Cord-Sealing Grip, 3/4" NPT, Straight Female with O-Ring, Cable Diameter 4.75-6.35mm (.187-.250")MAX- LOC应力消除线封口的抓地力, 3/4 “NPT ,直女与O型圈,电缆直径4.75-6.35mm ( .187 - .250” )