Bullet Connectors With Sheaths

The 4mm Nihon Tanshi bullets are of thicker material and require a decent quality crimper. The crimps and joints are very durable. The Yazaki 4mm bullets are easy to work with and have proven very reliable. 3.5mm bullets by JST are like the 4mm Yazaki, easy to work with and most off the shelf crimpers should do a decent job. The 2.5mm bullets are for lower currents and where space is an issue. They are used on some older Kawasaki bikes.