The 1UP Racing Lockdown Adjustable Bullet Plug Grips come with 4mm bullet connectors and are available in a red and black two-grip set. The adjustable grip design is intended to make plugging and unplugging battery connectors easier and more secure during high-use racing conditions. Each grip features the 1UP Racing collar-style locking ring that cinches around the bullet plug for a firm hold. Features: Includes 4mm bullet connectors Adjustable grip collar locks onto bullet plug Red and black color set Compatible with standard 4mm bullet connector wiring 7/7/26 cs