These are the 4mm High Current Bullet Connectors from Castle Creations.
FEATURES:
Gold plated Fits wire diameter up to 4mm Use 16 gauge to 13 gauge wires Up to 75A current
YOU WILL RECEIVE:
Three sets of bullet connectors
REQUIREMENTS:
Solder and soldering iron - HCAR0776 and STAR2000
SPECIFICATIONS:
length: .66" (17mm) diameter: .15" (4mm) inside (where the wire is soldered to) diameter: .19" (5mm) outside tlw 12/28/07 ir/jxs &